Question

The heights​ (in inches) of 10 adult males are listed below. Find the sample standard deviation. Round to the nearest hundreth.

Start 1 By 10 Matrix 1st Row 1st Column 70 2nd Column 72 3rd Column 71 4st Column 70 5st Column 69 6st Column 73 7st Column 69 8st Column 68 9st Column 70 10st Column 71 EndMatrix 70  72  71  70  69  73  69  68  70  71

Answer 1

Solution :

=> standard deviation σ = 1.49

Explanation :

Given that 70 72 71 70 69 73 69 68 70 71

=> Mean x-bar = 70.3

=> sum of terms = 70 + 72 + 71 + 70 + 69 + 73 + 69 + 68 + 70 + 71 = 703

=> Number of terms = 10

=> Mean = sum of terms/Number of terms

= 703/10

= 70.3

=> standard deviation = 1.49 (rounded)