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1 (8 pts) For the following set of sample data:
x={2,4,1,1,3,fl,5} a. calculate the mean, median, and mode
Mean = 2.3 Median = 2 Mode = 1
b. calculate the standard deviation using the deviation scores method c. Calculate the standard deviation using the raw scores method and confirm
the same answer as for part b. d. Calculate the variance. 2 (12 pts) For the following data it: {5, 2, T, 9, 4}
a. Find SS (use whichever method you want):
b. Find s (assuming this is sample data):
c. Find c (assuming this is population data): d. Assuming this is population data, calculate SEEN. What is the name we give
to this statistic? 3 (5 points) The deviation-method formula calculating the standard deviation
(and variance} includes the mean. Explain why it makes sense for this measure
of the valiability of a sample to be calculated using the mean. (Hint: what is it that that Instant-lard rInuini-inn museum-1:91

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