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In a recent academic year, many public universities in the United States raised tuition and fees due to a decrease in state subsidies. The change in the cost of tuition, a shared dormitory room, and the most popular meal plan from the previous academic year for a sample of 10 public universities were as follows: $1589, $593, $1223, $869, $423, $1720, $708, $1425,$ 922, and $308.
What is the average of the change in the cost?
A. 939
B. 1220
C. 978
D. 1052
What is the standard deviation of the change in the cost for this sample?
A. 217678.6
B. 466.6
C. 491.8
D. 241865.1
Sagot :
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