In: Statistics and Probability
Sales volume last weekend for four samples, each consisting of five car dealerships, were as follows:
Data Point | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
Sample 1 | 10 | 31 | 42 | 18 | 29 |
Sample 2 | 35 | 41 | 27 | 15 | 33 |
Sample 3 | 32 | 17 | 38 | 25 | 31 |
Sample 4 | 17 | 20 | 36 | 28 | 44 |
What is the variance of the distribution of sample means?
Please round your answer to the nearest tenth.
Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.