Homework Help: Statistics

Posted by Dom on Tuesday, September 13, 2011 at 12:24am.

I you are told that a data set has a mean of 25 and a variance of 0 you can conclude that
A)There is only one observation in the data set
B) There are no observations in the data set
C)All of the observation in the data set are 25
D)Someone has made a mistake
E) None of the Above
I picked C am I right

Statistics - MathGuru, Tuesday, September 13, 2011 at 5:54pm
Correct!
Statistics - Anonymous, Friday, February 1, 2013 at 2:55pm
A set of 50 data value has a mean of 15 and a variance of 36. Find the standard score of a data value = 18

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