Homework Help: homework statistics

Posted by Jackay 70 on Friday, July 22, 2011 at 2:01am.

Consider a random sample with sample mean x. If the sample size increased from n = 40 to n = 360, then the standard deviation of x will:

a. remain the same

b. increase by a factor of 9 (will be multiplied by 9)

c. decrease by a factor of 9 (will be multiplied by 1/9)

d. decrease by a factor of 3 (will be multiplied by 1/3)

homework statistics - SraJMcGin, Friday, July 22, 2011 at 10:22am
Try some of the statistics tutorials:

http://www.google.com/search?q=statistics+tutorials&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

Sra
homework statistics - PsyDAG, Friday, July 22, 2011 at 7:30pm
Assuming that you are referring to the standard deviation and not the standard error of the mean, the standard deviation will remain essentially the same.

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