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EXERCISE 1. WRITE THE LETTERS OF THE CORRECT ANSWERS IN THE SPACES PROVIDED. Questions A,B,C,D Questions A,B,C,D 1 6 2 7 3 8 4 9 5 10 1. A grouping of data into classes giving the number of observations in each class is called a(an)___ a) Bar chart b) frequency distribution. c) pie chart. d) cumulative frequency distribution. 2. The distance between consecutive lower class limits is called the____________ a) class interval. b) frequency distribution. C) class midpoint. d) Class frequency 3. The class midpoint is ____________ a) equal to the number of observations b) equal to the cumulative distribution C) equal to the class interval. a) d) found by adding the lower class limits of two consecutive classes and dividing by 2. 4. The number of observations in a particular class is called the___________ a) class interval. b)class frequency. c) frequency distribution. d) cumulative frequency distribution 5. A bar chart is used most often when____________ a) you want to show frequencies as compared to total observations. b) you want to display frequencies by category. C. you want to organize data along certain time interval. c) you want to show frequencies by class intervals. 6. In a relative frequency distribution___________________ a) the class frequencies are divided by 100. b)the data are related to each other rather than mutually exclusive. c. the class frequency is divided by the total number of observations. d. the frequencies are added together to give a relative set of numbers. 7.Cumulative frequency polygons are constructed from line segments connecting___________________ a. the upper class limits and corresponding cumulative frequencies. b. the lower class limits and corresponding cumulative frequencies. c. the interval midpoints and corresponding cumulative frequencies. d. the upper class limits and corresponding frequencies. 8. A graphic representation of a frequency distribution constructed by connecting the class midpoints with lines is called a ___________ a. histogram b. line chart c. pie chart d. frequency polygon Page 2 of 4 Use the graph below for questions 9 and10: 9. Approximately what percent of the investments are in coins? a)8% b)9% c)10% 10.Coins and bonds together make up about what part of the investment? a) 1/3 b) ΒΌ c) 1/5 Exercise 2. A Student has completed 20 Courses from a College of Business Administration. Her Grades in the 20 courses are shown below. A B A B C C C B B B B A B B B C B C B A (a) Develop a frequency distribution for her grades. a) Develop a percentage frequency distribution for her grades. Page 3 of 4 (Use Exercise 2 data). (c) Construct a Bar graph for her grades. Exercise 3. There were 850 students in the school of business administration in a university. The school offers four majors, namely: Accounting, Finance, Management and Marketing. The following shows the number of students enrolled in each major: Major Number of Students Accounting 290 Finance 160 Management 320 Marketing 80 (a) Develop a relative frequency distribution Page 4 of 4 (b) (Use Exercise 3 data) Develop a percentage frequency distribution (Use Exercise 3 data) c). Construct a Line graph for the number of students enrolled for each major. d). Construct a PIE graph for the number of students enrolled for each major.

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