The number of attorneys in 10 law firms in pits burgh is 81

The number of attorneys in 10 law firms in pits burgh is 81 101 53 213 171 121 160 76 64 80 Find the range, variance and standard deviation. Round the variance to one decimal place and the standard deviation to two decimal places, if necessary. Part 1 out of 3 The range is attorneys.

Solution

Mean Total x 81 101 53 213 171 121 160 76 64 80 112 x-112 -31 -11 -59 101 59 9 48 -36 -48 -32 0 (x-112)^2 961 121 3481 10201 3481 81 2304 1296 2304 1024 25254 Mean 112 Variance (25254-112^2) 12710 Range Highest-Lowest 160