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April 20, 2014

April 20, 2014

Posted by **david** on Sunday, June 23, 2013 at 9:49pm.

x 0 1 2

P(x) .25 .50 .25

Calculate the mean and standard deviation of x. Give a brief interpretation of the value of the mean.

- Statistics -
**Kuai**, Sunday, June 23, 2013 at 10:13pmMean = 0(.25)+ 1(.50) + 2(.25)

Variance = 0^2(.25) + 1^2 (.50) + 2^2 (.25)

Sd = sqrt((variance - mean^2))

sd = sqrt(1.5- 1)= .7071067812

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