The following histogram shows the distribution of course grades for a previous s

Question

The following histogram shows the distribution of course grades for a previous semester. Use it to answer questions 13 through 15. How many students were in this section? a. 100 b. 9 c. 80 d. 24 e. 33 What percent of students earned a C or better (that is. a course average of 70 or better)? a. 19% b. 9% c. 79% d. 37.5% e. 90% The following bar graph shows the frequency by manufacturer of cars sold in January. What kind of data is represented in this graph? a. Discrete b. Continuous c. Nominal d. Ordinal Approximately what percent of the sales were Kias? a. 11% b. 16% c. 20% d. 33%

Explanation / Answer

16 ans) from the histogram we caluclate values as

1+1+3+9+6+4 =24

option d is correct

17 ans) option b 9%

18 ans) option c it is nominal data

19 ans) total cars sold in jan = 40+35+25+50+15+20=185

percentage of sales of kias is 20% i.e (20/185 )*100 = 10.81 nearly equal to 11%

so option a is correct

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