Monday, May 24, 2010

Mean and standard deviation for a population?

I am just checking my answers, can someone verify . Thank you





4 students own the following # of calculators





Student A, B, C, D


# of calc 2, 1, 4, 3





-Find the mean and standard deviation:


mean:2.5


Stand. dev: 0.433





-2 randon samples where drawn calculate mean and standard dev.


mean :2.5


standard dev: 0.306

Mean and standard deviation for a population?
Yeah your right.


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