Here are the shopping times (in minutes) for a sample of 6 shoppers at a particular grocery store. 35,34,26,27,33,31 Find the standard deviation of this sample of shopping times. Round your answer to two decimal places.

3.42

Step-by-step explanation:

calculate the mean

(35+34+26+27+33+31) / 6 = 186/6 = 31

35-31 = 4 4² = 16

34-31 = 3 3² = 9

26-31 = - 5 (-5) ² = 25

27-31 = - 4 (-4) ² = 16

33-31 = 2 2² = 4

31-31 = 0 0² = 0

Total: 16+9+25+16+4+0 = 70

standard deviation = √ (70/6) = √11.66 = 3.4156 ≅ 3.42