Ballot Preferences. In Issue 338 of the Amstat News, thenpresident of the American Statistical Association, F. Scheuren, reported the results of a survey on how members would prefer to receive ballots in annual elections. On the WeissStats site, you will find data for preference and highest degree obtained for the 566 respondents. a. determine a frequency distribution. b. obtain a relative-frequency distribution. c. draw a pie chart. d. construct a bar chart.

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A: Solution

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A: here ascending order of given time , 129, 130, 135, 135, 137, 138, 139, 144, 146, 146, 148, 149,…

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A: Given:  56 48 47 42 52 58 42 37 68 40 32 46 45 41 38 34 54 57 61 53 26 45 46 44 50 30 40 56 44 39 21…

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A: d. The number of observations that fall into that class.

Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.