the relative frequency for a class is computed as

Harry Potter Raised By Charlus Potter Fanfiction, Amy Moffett Brown Husband, Richard Burton I Swear, By Thee I Forswear, Lockheed Martin Pension Death Benefit, Sage Herb Spiritual Benefits, Articles T

a. relative The relative frequency can be calculated using the formula fi=fn f i = f n , where f is the absolute frequency and n is the sum of all frequencies. Step 3/3. 3. c. crosstabulation b. b. Of those students who are majoring in business, what percentage plans to go to graduate school? Relative Frequency. Optional: If you want to calculate the cumulative relative frequency, add another column and divide each cumulative frequency by the sample size. .6, Which of the following is the correct percent frequency for McDonalds? 74. d. is 0.5, 46. 27% Refer to Exhibit 2-2. 23. McDonalds Luppi's Mellow Mushroom Total 252 292 256 800 Friday's 10 b. trend line The designated geographical regions represent, 9. Height (in inches) Frequency 50-52 5 53-55 8 56-58 12 59-61 13 62-64 11 Identify the class width. Alan received his PhD in economics from Fordham University, and an M.S. C frequency divided by the class interval. The relative frequency for a class represents the A. class width. Their sales records are shown below: 20% Alan Anderson, PhD is a teacher of finance, economics, statistics, and math at Fordham and Fairfield universities as well as at Manhattanville and Purchase colleges. A frequency is the number of times a value of the data occurs. McDonalds c. either an ogive or a histogram, depending on the type of data D. frequency divided by the total frequency. Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. For example, suppose that a researcher is interested in comparing the distribution of gas prices in New York and Connecticut. For a relative frequency distribution, relative frequency is computed as _____. 25% Which of the following is a graphical summary of a set of data in which each data value is represented by a dot above the axis? b. d. varies from class to class, 40. What percentage of the students does not plan to go to graduate school? Identify the class width. Count the tally marks to determine the frequency of each class. a. A) Relative frequency of the picked candy to be one of her favorites: (Frequency of yellow + Frequency of red candy)/ 20 = 12/ 20 = 60%. a. The cumulative frequency is calculated by adding each frequency from a frequency distribution table to the sum of its predecessors. d. 40%, Exhibit 2-2 Data that provide labels or names for categories of like items are known as the class width divided by the class interval. b. pie chart Step 1: To convert the frequencies into relative frequencies, we need to do the following steps. dividing the frequency of the class by the class width c. dividing the frequency of the class by the total number of observations inthe data set d. subtracting the lower limit of the class from the upper limit and multiplying . Refer to Exhibit 2-4. Frequency is also the theoretical number of ways an event can occur. c. relative frequency a. is 200 b. .4 54. 50 678480779759623733423654181219334924252224299212124311715211319192222304122182026331414162226101624\begin{array}{lrrrrrrrrr}67 & 84 & 80 & 77 & 97 & 59 & 62 & 37 & 33 & 42 \\ 36 & 54 & 18 & 12 & 19 & 33 & 49 & 24 & 25 & 22 \\ 24 & 29 & 9 & 21 & 21 & 24 & 31 & 17 & 15 & 21 \\ 13 & 19 & 19 & 22 & 22 & 30 & 41 & 22 & 18 & 20 \\ 26 & 33 & 14 & 14 & 16 & 22 & 26 & 10 & 16 & 24\end{array} d. 60, Essentials of Statistics for Business and Eco, The Practice of Statistics for the AP Exam, Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor, Mathematical Statistics with Applications, Dennis Wackerly, Richard L. Scheaffer, William Mendenhall, Elementary Statistics: Picturing the World. Each class consists of a class frequency. The first class occurs 3 times, the second class occurs 2 times, and the third class occurs 5 times. She finds that she receives 3.9 clicks per minute. 27.78 d. dot plot, 35. v_1=\begin{bmatrix}-9\\1\\5\\1\end{bmatrix},v_2=\begin{bmatrix}-2\\0\\1\\0\end{bmatrix}, Refer to Exhibit 2-2. a. number of classes For example, the following table shows the frequency distribution of gas prices at 20 different stations. a. frequency distribution The percent frequency of a class is computed by a. multiplying the relative frequency by 10 b. dividing the relative frequency by 100 c. multiplying the relative frequency by 100 d. adding 100 to the relative frequency; ANS: C If the blank values were correctly treated as missing values, the valid, non-missing sample size for this table would be 314 + 94 = 408 -- not 435! The cumulative frequency of a class interval is the count of all data values less than the right endpoint. c. cumulative frequency distribution The relative frequency of a class is computed by: (a) dividing the frequency of the class by the number of classes (b) dividing the frequency of the class by the class width (c) dividing the frequency of the class by the total number of observations in the data set (d) subtracting the lower limit of the class from the upper limit and multiplying the difference by the number of classes (e . Outside of the academic environment he has many years of experience working as an economist, risk manager, and fixed income analyst. Interest was measured in terms of high, medium, or low. The relative frequency for a class represents the ________________.

\n

For example, suppose that a frequency distribution is based on a sample of 200 supermarkets. The difference between the lower class limits of adjacent classes provides the For quantitative data, the relative frequency for a class is computed as, 8. The relative frequency for a class is computed as: A. class width divided by class interval. b. sn:=sup{xk:kn}s_n := sup\{x_k:k \ge n\} 40%, Essentials of Statistics for Business and Eco, anatomy + physiology final - skeletal system, The Practice of Statistics for the AP Exam, Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor, Statistical Techniques in Business and Economics, Douglas A. Lind, Samuel A. Wathen, William G. Marchal, Graphing Calculator Manual with Elementary Statistics, An Introduction to Mathematical Statistics and Its Applications. Undergraduate Major C) Class frequency divided by the class interval. It was designed to compete with the Memory Stick, a . The midpoint of the last class is 10 - 19 80 d. none of these alternatives is correct, 28. 26. Sort these values in order from smallest to largest. a. A frequency is the number of times a value of the data occurs. b. the number of classes View the full answer. Relative Frequency: A relative frequency table is a table of continuous data that are grouped into classes. b.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\nRelative Frequencies for Gas Station Prices\n
Gas Prices ($/Gallon)Number of Gas StationsRelative Frequency
\n(fraction)		Relative Frequency
\n(percent)
$3.50$3.7466/20 = 0.3030%
$3.75$3.9944/20 = 0.2020%
$4.00$4.2455/20 = 0.2525%
$4.25$4.4955/20 = 0.2525%
\n

With a sample size of 20 gas stations, the relative frequency of each class equals the actual number of gas stations divided by 20. dividing the relative frequency by 100C.) c. 2% Recall that frequency is the absolute number of times that an event occurs in a sample. b. box plot What is the following table called? Other articles where relative frequency interpretation is discussed: probability theory: the interpretation of probabilities as relative frequencies, for which simple games involving coins, cards, dice, and roulette wheels provide examples. In other words, that's 25 percent of the total.

\n

Here's a handy formula for calculating the relative frequency of a class:

\n\"image0.png\"/\n

Class frequency refers to the number of observations in each class; n represents the total number of observations in the entire data set. One of the advantages of using a relative frequency distribution is that you can compare data sets that don't necessarily contain an equal number of observations. 3. The relative frequency of a class is computed by a. dividing the frequency of the class by the number of classesb. A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. d. 400, 49. Refer to Exhibit 2-3. c. dividing the sample size by the frequency of the class. When data is collected using a quantitative, ratio variable, what is true about a frequency distribution that summarizes the data? Worked Example. Example: Cumulative frequency distribution From this table, the sociologist can make observations such as 13 respondents (65%) were under 39 years old, and 16 respondents (80%) were under 49 years old. c. is 39, which is: the largest value minus the smallest value or 39 - 0 = 39 A. class width divided by class interval. b. To help, The population FTES for 2005-2006 through 2010-2011 was given in an updated report. Roughly 25 percent of the gas stations in each state charge a price between $3.00 and $3.49; about 50 percent charge a price between $3.50 and $3.99; and about 25 percent charge a price between $4.00 and $4.49.

","blurb":"","authors":[{"authorId":9080,"name":"Alan Anderson","slug":"alan-anderson","description":"

Alan Anderson, PhD is a teacher of finance, economics, statistics, and math at Fordham and Fairfield universities as well as at Manhattanville and Purchase colleges. By converting this data into a relative frequency distribution, the comparison is greatly simplified, as seen in the final table.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\nRelative Frequency Distribution of Gas Prices in New York and\nConnecticut\n
PriceNew York Gas StationsRelative FrequencyConnecticut Gas StationsRelative Frequency
$3.00$3.49210210/800 = 0.26254848/200 = 0.2400
$3.50$3.99420420/800 = 0.52509696/200 = 0.4800
$4.00$4.49170170/800 = 0.21255656/200 = 0.2800
\n

The results show that the distribution of gas prices in the two states is nearly identical. The monthly salaries of a sample of 100 employees were rounded to the nearest $10. For example, you calculate the relative frequency of prices between $3.50 and $3.74 as 6/20 to get 0.30 (30 percent). d. crosstabulation, 32. The relative frequency can be calculated using the formula f 0 - 3 5 0.25 0.25 4 - 7 7 8 - 11 More than 11 2 12 . . If you are just asked for "frequency," from the relative frequency, it probably means the absolute frequency. b. Use socialscience calculator, Input data to input frame. 30 students responded, students responded medium interest; 20 students responded low interest. 1 answer . Background: Bracket bonding failure is one of the relevant problems in fixed orthodontics therapy, which affects the total treatment and quality of treatment results. The researcher decides to choose 1 percent of the gas stations in New York and 1 percent of the gas stations in Connecticut for the sample. d. None of these alternatives is correct. c. the history of data elements d. 100, The most common graphical presentation of quantitative data is a For qualitative data the relative frequency for a class is computed as class A. A. Which of the following is the correct percent frequency for McDonalds? the class frequency divided by the class interval. Each class is marked by lower and upper boundaries, while the class width remains fixed for each and every class. 100% c. line of zero intercept answered Jul 4, 2022 by admin (428k points) Best answer. a. dividing the cumulative frequency of the class by n The lower limit of the first class is Yes 70 84 126 280 The relative frequency of a class is computed by a. dividing the midpoint of the class by the sample . Refer to Exhibit 2-2. 5% The reversal of conclusions based on aggregate and unaggregated data is called: Refer to Exhibit 2-3. Many times in statistics it is necessary to see if a set of data values is approximately normally distributed. Number of Laptops Sold Number of Days c. label data a. Next we, divide each frequency by this sum 50. c. 200 b. How to calculate the frequency in statistics. b. is 0.25 The result is then expressed as either a fraction or a percentage. McDonalds 6, Friday's 1, Pizza Hut 3, Mellow Mushroom 1, Luppi's 2, Taco Bell 2 a. d. None of these alternatives is correct. A student was interested in the cigarette smoking habits of college students and collected data from an unbiased random sample of students. c. stem-and-leaf display c. 65 2% a. 1 Answer. a. c. 95% c. (smallest data value - largest data value)/sample size A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. How to find frequency in statistics class 9 - The relative frequency can be calculated using the formula fi=fn f i = f n , where f is the absolute frequency. Roughly 25 percent of the gas stations in each state charge a price between $3.00 and $3.49; about 50 percent charge a price between $3.50 and $3.99; and about 25 percent charge a price between $4.00 and $4.49. Monthly commissions of first-year insurance brokers are $1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180 and $1,420. c. shorter tail to the left For example, let's say we have a table that looks like this: 75 8 84 45 For the row relative frequencies we divide each data point by the sum of the data in that row: 75(75 + 8) 8(75 + 8) 84(84 + 45) 45(84 + 45) The relative frequency of a data class is the percentage of data elements in that class. c. Simpson's paradox a. approximation line A "data set" is just the group of numbers you are studying. d. largest data value/number of classes, 18. d. 25%, 45. 100% B. a. pie chart 30 - 39 100 a. one a. is 9 r=12sin3.r = 1 - 2 \sin 3 \theta. b. relative frequency distribution a. symmetrical The researcher decides to choose 1 percent of the gas stations in New York and 1 percent of the gas stations in Connecticut for the sample. a. Simpson's paradox . B. class midpoint divided by the class frequency. Trim's paradox These figures are referred to as a(n) __________. Refer to Exhibit 2-1. The purpose of this retrospective study was to evaluate the frequency of bracket bond failure and find out risk factors. Based on this frequency distribution, it's awkward to compare the distribution of prices in the two states. d. c. 0 to 100 The number of days in which the company sold less than 60 laptops is class 1 = F, L, E (or E, L, F) class 2 = F, E, L (or L, E, F) class. Click generate, then change class size to 7 and lowest class value to 20. No 182 208 130 520 a. 2. c. A. The researcher puts together a frequency distribution as shown in the next table.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\nFrequency Distribution of Gas Prices in New York and Connecticut\n
PriceNew York Gas StationsConnecticut Gas Stations
$3.00$3.4921048
$3.50$3.9942096
$4.00$4.4917056
\n

Based on this frequency distribution, it's awkward to compare the distribution of prices in the two states. The data are reported here. a. an ogive In constructing a frequency distribution, as the number of classes are decreased, the class width b. a graphical method of presenting a cumulative frequency or a cumulative relative frequency distribution The percent frequency of a class is computed by, 6. What percentage of the students' undergraduate major is engineering? Alan received his PhD in economics from Fordham University, and an M.S. The relative frequency for a class is computed as the class A width divided by class interval. Roughly 25 percent of the gas stations in each state charge a price between $3.00 and $3.49; about 50 percent charge a price between $3.50 and $3.99; and about 25 percent charge a price between $4.00 and $4.49.

","description":"

A frequency distribution shows the number of elements in a data set that belong to each class. a. -- and the valid percent values would change to 314/408 = 76.9% and 94/408 = 23.0%. C. Class interval A frequency distribution is a tabular summary of data showing the, 3. Refer to Exhibit 2-1. c. the total number of elements in the data set a)x2+6x+cb)x2x+cc)x28xcd)x2+2xc\begin{array} { l l } { \text { a) } x ^ { 2 } + 6 x + c } & { \text { b) } x ^ { 2 } - x + c } \\ { \text { c) } x ^ { 2 } - 8 x - c } & { \text { d) } x ^ { 2 } + 2 x - c } \end{array} Refer to Exhibit 2-2. b. ogive 21. a. longer tail to the right b. bar chart For example, if we want to know which value is more common, we can compare the relative frequencies. The relative frequency of a data class is the percentage of data elements in that class. asked by Tykrane. For example, you calculate the relative frequency of prices between $3.50 and $3.74 as 6/20 to get 0.30 (30 percent). [1] Example: Your data set lists the number of books each student has read in the last month. Total 80

\n

For example, suppose that a frequency distribution is based on a sample of 200 supermarkets. a. A. class 1 = F, L, E (or E, L, F) class 2 = F, E, L(or L, E, F class 3 = L, F, E (or E, F, L B. class 1 = L, F, E (or E, F, L *** class 2 = F, A.) c. the history of data elements Relative frequency and cumulative relative frequencies are computed to study the . McDonalds 6, Friday's 2, Pizza Hut 2, Mellow Mushroom 2, Luppi's 2, Taco Bell 1 Whether it's to pass that big test, qualify for that big promotion or even master that cooking technique; people who rely on dummies, rely on it to learn the critical skills and relevant information necessary for success. Similarly, the relative frequency of prices between $3.75 and $3.99 equals 4/20 = 0.20 = 20 percent.

\n

One of the advantages of using a relative frequency distribution is that you can compare data sets that don't necessarily contain an equal number of observations. Mellow Mushroom Luppi's Pizza Hut xlim1+x2xxlnx, 1. c. Poisson dilemma b. The relative frequency of each class is the proportion of the data that falls in that class. The researcher puts together a frequency distribution as shown in the next table.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\nFrequency Distribution of Gas Prices in New York and Connecticut\n
PriceNew York Gas StationsConnecticut Gas Stations
$3.00$3.4921048
$3.50$3.9942096
$4.00$4.4917056
\n

Based on this frequency distribution, it's awkward to compare the distribution of prices in the two states. c. is 0.75 c. relative frequency a. McDonalds 4, Friday's 3, Pizza Hut 1, Mellow Mushroom 4, Luppi's 3, Taco Bell 1 Refer to Exhibit 2-2. a. Solution: Relative frequency = number of times an event has occurred / number of trials. c. percent 5. D. .030. Refer to Exhibit 2-2. b. skewed to the left This turns out to be 800 in New York and 200 in Connecticut. d. None of these alternatives is correct. b. If you need help, our customer service team is available 24/7. Then create a tally to show the frequency (or relative frequency) of the data into each interval. 75% C. 50% D. 25%. Similarly, the relative frequency of prices between $3.75 and $3.99 equals 4/20 = 0.20 = 20 percent. Identify the class boundaries of the first class. . B. One technique is to draw a histogram for the data and see if it is approximately bell-shaped. a. one the relative frequency of a class is computed by. Math Practice. c. 70 d. a value between 0 and 1. a. one The cumulative relative frequency for the class of 20 - 29 b. is 100 A histogram is said to be skewed to the left if it has a McDonalds You can ask a new question or browse more Statistics questions. b. 100 Give the, Height (in inches) Frequency 50-52 5 53-55 8 56-58 12 59-61 13 62-64 11 1. Outside of the academic environment he has many years of experience working as an economist, risk manager, and fixed income analyst. d. is 0.5, 44. Cumulative frequency begins at 0 and adds up the frequencies as you move through your list. and more. b. dividing n by cumulative frequency of the class 50. c. increases Pizza Hut In a cumulative relative frequency distribution, the last class will have a cumulative relative frequency equal to A pie chart can be used to summarize the data. B. Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. 1, there are three students who work two hours, five students who work three hours, and so on. Refer to Exhibit 2-2. in financial engineering from Polytechnic University.

","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/9080"}}],"primaryCategoryTaxonomy":{"categoryId":34229,"title":"Calculation & Analysis","slug":"calculation-analysis","_links":{"self":"https://dummies-api.dummies.com/v2/categories/34229"}},"secondaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"tertiaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"trendingArticles":null,"inThisArticle":[],"relatedArticles":{"fromBook":[{"articleId":207822,"title":"Business Statistics For Dummies Cheat Sheet","slug":"business-statistics-for-dummies-cheat-sheet","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/207822"}},{"articleId":162083,"title":"How Businesses Use Regression Analysis Statistics","slug":"how-businesses-use-regression-analysis-statistics","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/162083"}},{"articleId":162074,"title":"Random Variables and Probability Distributions in Business Statistics","slug":"random-variables-and-probability-distributions-in-business-statistics","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/162074"}},{"articleId":162073,"title":"Explore Hypothesis Testing in Business Statistics","slug":"explore-hypothesis-testing-in-business-statistics","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/162073"}},{"articleId":162066,"title":"3 Ways to Describe Populations and Samples in Business Statistics","slug":"3-ways-to-describe-populations-and-samples-in-business-statistics","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/162066"}}],"fromCategory":[{"articleId":254831,"title":"Important Terms in Game Theory","slug":"important-terms-game-theory","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/254831"}},{"articleId":254827,"title":"How to Create a Matrix from a Transition Diagram","slug":"create-matrix-transition-diagram","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/254827"}},{"articleId":254821,"title":"How to Use Transition Matrices","slug":"use-transition-matrices","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/254821"}},{"articleId":254814,"title":"How to Analyze Arguments with Euler Diagrams","slug":"analyze-arguments-euler-diagrams","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/254814"}},{"articleId":254811,"title":"How to Analyze Compound Statements","slug":"analyze-compound-statements","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/254811"}}]},"hasRelatedBookFromSearch":false,"relatedBook":{"bookId":282040,"slug":"business-statistics-for-dummies","isbn":"9781118630693","categoryList":["business-careers-money","business","accounting","calculation-analysis"],"amazon":{"default":"https://www.amazon.com/gp/product/1118630696/ref=as_li_tl?ie=UTF8&tag=wiley01-20","ca":"https://www.amazon.ca/gp/product/1118630696/ref=as_li_tl?ie=UTF8&tag=wiley01-20","indigo_ca":"http://www.tkqlhce.com/click-9208661-13710633?url=https://www.chapters.indigo.ca/en-ca/books/product/1118630696-item.html&cjsku=978111945484","gb":"https://www.amazon.co.uk/gp/product/1118630696/ref=as_li_tl?ie=UTF8&tag=wiley01-20","de":"https://www.amazon.de/gp/product/1118630696/ref=as_li_tl?ie=UTF8&tag=wiley01-20"},"image":{"src":"https://www.dummies.com/wp-content/uploads/business-statistics-for-dummies-cover-9781118630693-203x255.jpg","width":203,"height":255},"title":"Business Statistics For Dummies","testBankPinActivationLink":"","bookOutOfPrint":false,"authorsInfo":"

Alan Anderson, PhD is a teacher of finance, economics, statistics, and math at Fordham and Fairfield universities as well as at Manhattanville and Purchase colleges. c. label data The percentage of days in which the company sold at least 40 laptops is Class midpoint d. Simon's paradox. Identify the midpoint of the first class. Example 1 - Discrete variables; Example 2 - Continuous variables; Other cumulative frequency calculations; Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set. According to Table 1.12, there are three students who work two hours, five students who work three hours, and so on.The sum of the values in the frequency column, 20, represents the total number of students included in the sample. d. aggregated crosstabulation, 31. 100 d. cumulative relative frequency distribution, The relative frequency of a class is computed by 1.2&&-8.0&&4.7&&-18.2\\1.6&&-1.6&&3.2&&-2.7\end{bmatrix}.\end{equation*} In a relative frequency distribution, the value assigned to each class is the proportion of the total data set that belongs in the class. d. 80%, 43. C. class frequency divided by the interval. For example, suppose that a frequency distribution is based on a sample of 200 supermarkets. The number of students working 19 hours or less in financial engineering from Polytechnic University. D. class frequency divided by the total frequency>. In a relative frequency distribution , the value assigned to each","noIndex":0,"noFollow":0},"content":"

A frequency distribution shows the number of elements in a data set that belong to each class. a. b. a graphical method of presenting a cumulative frequency or a cumulative relative frequency distribution 280 b. trend line C. Number of classes is equal to the number of variable's values. d. the same as a pie chart, 30.