Penny calculates that the deviations from the mean for a data set of eight values are 0, - 40, -78, -71, 33, 36, 42, and 91.
a. How do you know that at least one of the deviations is incorrect?
b. If it turns out that 33 is the only incorrect deviation, what should the correct deviation be?
c. Use the corrected deviations to find the actual data values, the standard deviation, the median, and the inter-quartile range if the mean is
i. 747
ii. 850
d. Write your observations from 11a-c.