SOLUTION: The following values represent the number of smartphones sold per day at a local cell phone retail store during the last 10 business days. 13, 8, 10, 12, 19, 10, 13, 12, 6, 16 I

Question 1135683: The following values represent the number of smartphones sold per day at a local cell phone retail store during the last 10 business days. 13, 8, 10, 12, 19, 10, 13, 12, 6, 16
I know the range is 13
I am unsure of how to calculate the sample variance and the sample standard deviation. Could you help?
Answer by ikleyn(52848) (Show Source): You can put this solution on YOUR website!
.



The sample variance is defined by

    

where m the sample mean and N is the sample size.



Sample standard deviation is

    .

There are numerous Internet sites allowing online (free of charge) calculations.

For example, this one

https://www.calculator.net/statistics-calculator.html

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