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We are going to calculate the standard deviation for the following set of sample data by...

We are going to calculate the standard deviation for the following set of sample data by hand. Round all values to 4 decimal places where possible. Note: on the exam you can use the calculator function.

a) Calculate the mean. ¯ x = b)

Fill in the table. x x − ¯ x ( x − ¯ x ) 2 12 8 10 10 5 Total

c) Calculate the standard deviation. Standard deviation: s = √ ∑ ( x − ¯ x ) 2 n − 1

s =

math   Statistics-And-Probability   
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Answer #1

Assuming the observations as 12,8,10,10,5,the solution should be as follows:

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