Determine the whole number of standard deviations that includes all data values. The mean price of the nonfiction books on a best-sellers list is...

Determine the whole number of standard deviations that includes all data values.The mean price of the nonfiction books on a best-sellers list is $25.07; the standard deviation is $2.62.$26.95, $22.95, $24.00, $24.95, $29.95, $19.95, $24.95, $24.00, $27.95, $25.00