SophiaPretty

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Category > Statistics Posted 15 Aug 2017 My Price 4.00

The attitudes of a sample of 12 teachers attending

The attitudes of a sample of 12 teachers attending a seminar on mathematical problem solving were measured before and after the seminar. A positive number for change in attitude indicates that a teachers attitude toward math became more positive. The 12 change scores are as follows; 3, 8, -1, 2, 0, 5, -3, 1, -1, 6, 5, -2 Using the set above, calculate the: Sample mean (/x) Sample variance (s2) Sample standard deviation (s)

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SophiaPretty
(5)
Status NEW Posted 15 Aug 2017 12:08 PM My Price 4.00

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