Mean and variance. Mathematics & Economics Math Problem (Math Problem Sample)
Mean and variance solutions with written explanationsource..
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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