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 $23.58; the standard deviation is $3.12.
$25.95, $18.00, $27.95, $19.00, $24.00, $25.95, $26.95, $22.00, $23.00, $23.00
All of the values fall within
standard deviation(s) of the mean.