8. Here are the scores for a recent test in a Prob/Stat class. 90 90 80 80 70 100 75 90 70 80 Answer the following questions regarding this set of data. Median- 95 100 80 80 90 90 Mean 75 70 60 85 Mode - 95 100 100 90 90 85

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8. Here are the scores for a recent test in a Prob/Stat class.
90
90
100 75
95
80
Median-
75
80
80
90
70
70
Answer the following questions regarding this set of data.
100 80
90 90
Standard Deviation-
Mean=
70
80
Variance-
Mode -
How many scores are within 1 standard deviation of the mean?
60
85
How many scores are within 2 standard deviations of the mean?
Hint: Drawing the curve will help answer the last two questions!!!
95
90
100
90
100
85
9. Calculate the percentile of 65 in the following distribution:
43, 43, 44, 45, 45, 47, 48, 50, 53, 54, 55, 55, 57, 62, 64, 65, 65, 65, 65, 67, 69, 69, 70, 72, 75
Transcribed Image Text:8. Here are the scores for a recent test in a Prob/Stat class. 90 90 100 75 95 80 Median- 75 80 80 90 70 70 Answer the following questions regarding this set of data. 100 80 90 90 Standard Deviation- Mean= 70 80 Variance- Mode - How many scores are within 1 standard deviation of the mean? 60 85 How many scores are within 2 standard deviations of the mean? Hint: Drawing the curve will help answer the last two questions!!! 95 90 100 90 100 85 9. Calculate the percentile of 65 in the following distribution: 43, 43, 44, 45, 45, 47, 48, 50, 53, 54, 55, 55, 57, 62, 64, 65, 65, 65, 65, 67, 69, 69, 70, 72, 75
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The data are 
90,90,95,100,80,80,75,80,70,60,95,100,100,100,75,80,90,90,90,70,70,80,85,90,90,95

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