Question

1. If two distributions have the same range, then what must be equal? a) their high and low data values 2. In a skewed distribution, the median is preferred over the mean as a measure of the center because: a) the median is the most frequent number İfadistribution has a mean of 9 and five ofthe six data values are 6, 8, 11, 15,and18,then the missing data value is: a) 0 4. Gail received a grade of 75 on her chemistry exam. Rich received a grade of 80 on his law exam. The mean for the chemistry exam is 70 with a standard deviation of 5 and the mean for the law exam is 75 with a standard deviation of 4. Whose grade is more outstanding? a) Rich's, since his grade of 80 is higher than Gail's 75 Given the following table of representative data values: Questions 5-8: raw score z-score percentile rank 53 59 65 83 95 101 1.0 20 40 50 75 99 (Q1) 5. What's the missing raw score? 6. What's the missing z-score? 7. What's the difference between the two missing percentile ranks? 8. Since the mean is to theof the median, this distribution is 9. In a)70 a) 0 1S_skewed. a) left, positively a symmetric distribution, what is the approximate percentage of data values that lie between two standard deviations below the mean and one standard deviation above the mean? a) 84% Using this set of data: (122, 134, 126, 120, 128, 130, 120, 118, 125, 122, 126, 136, 118, 122, 124, 119), what is the percentile rank of 126 rounded to the nearest percent? a) 41 10. 11. Find the probability of getting a sum- (6 or 6) when rolling a pair of dice. a) 5/18

Answer 1

1. Standard deviation

Reason - standard deviation= Range/4

and Range is same for both. So, standard deviation will be same for both of them too.