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# Mean and variance. Mathematics & Economics Math Problem (Math Problem Sample)

Instructions:

Mean and variance solutions with written explanation

source..Content:

Question

Seven samples were obtained having the values 21,22,26,29,27,26 and 24.

Find the value of the mean and standard deviation.

To find the mean of a data set, you add all the values in the data set and divide by the number of values in the set.

The formula of the mean is

Mean = Sum of all data points / Number of all data points

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