How to calculate these statistic problems. Thanks see attached documents
How to calculate these problems ? The following data give the prices of seven textbooks randomly selected from a university bookstore.
4 $171 $10
4 $114 $5
1 $163 $143 a. Find the mean for these data. Calculate the deviations of the data values from the mean. Is the sum
of these deviations zero?
Mean = $ Deviation from the mean for $171 = $ Sum of these deviations = $ b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.]
Range = $ Variance = Standard deviation = $