SOLUTION: A) The following data lists the average monthly snowfall for January in 15 cities around the US. I need to find the mean, variance, and standard deviation. 36 12 6 18 7 36 31 4 12

Question 397419: A) The following data lists the average monthly snowfall for January in 15 cities around the US. I need to find the mean, variance, and standard deviation.
36 12 6 18 7 36 31 4 12 23 27 14 3 25 47
B)A math test has a mean of 49 and standard deviation of 6.0. I need to the the corresponding z scores for: a test score of 36 and a test score of 78.

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi

A) entering data in an Excel column and using the data analysis tool

 mean = 20.0667 , varience = 180.2095,  standard deviation = 13.4242

B) z = (36-49) /6  and z = (78-49)/ 6 

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