T-Mobile LTE 3:10 PM 31%) Done Test-#1 (Ch. 1-6 with 40 Questions).docx 1. You a
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T-Mobile LTE 3:10 PM 31%) Done Test-#1 (Ch. 1-6 with 40 Questions).docx 1. You are asked whether N, N, D, N, D constitute quantitative or qualitative data. Your best reply is a. quantitative because the letters probably refer to a count. b. qualitative because the letters probably refer to a class ora category. c. quantitative or qualitative depending on whether the letters represent an amount or count, or merely a code. d. quantitative or qualitative depending on the accuracy of the 2. What's wrong with the following frequency distribution? X Erequency 220239 200219 160199 140159 120139 100119 70 99 60 69 30 59 20 29 019 0 0 17 14 82 a. gaps between classes b. unequal classes c. not exactly ten classes d. nothing is wrong 3. Frequency polygons are particularly useful when a. data are qualitative b. data are ungrouped. c. two or more frequency distributions are to be displayed on the same graph. d. the original frequency distribution is to be portrayed with complete accuracy 4. A stem and leaf display is ideal for summarizing distributions when vou want toExplanation / Answer
1. Here option C is correct as the given data is quantitative if it is a count and qualtitative if it is represnt an amount or an code or category.
2. In the given distribution the width of the classes is a problem.There are unequal classes(option B)
3. Frequency polygons are a graphical device for understanding the shapes of distributions. They serve the same purpose as histograms, but are especially helpful for comparing sets of data. Frequency polygons are also a good choice for displaying cumulative frequency distributions. So option C is the most correct option.
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