Question

2 4 5 7 910 Jack Queen King 10 11 12 Ace 12

Assign the value of 1 to an Ace, 11 to a Jack, 12 to a Queen, and 13 to a King. All numeric cards will have

the same assigned values as their face values. What is the mean and population standard deviation of all card values in your deck?

Answer 1

mean = sum of all number/total number
= 91/13 = 7

std.dev = sum of (sqrt(x - mean)^2/n)
= sum of ((1 - 7)^2+ (2-7)^2 + (3-7)^2 +(4-7)^2 +(5-7)^2 +(6-7)^2 +(7-7)^2 +(8-7)^2 +(9-7)^2 +(10-7)^2 +(11-7)^2 +(12-7)^2 +(13-7)^2 )/13
= 3.7417