Posted by Blackqueen on .
A set of 50 data values has a mean of 27 and a variance of 16.
I. Find the standard score (z) for a data value = 19.
II. Find the probability of a data value < 19.
III. Find the probability of a data value > 19.
Show all work.

Statistics 
sadie,
steps to finding variance of sample data set.11 10 16 18 5 17 8 6 7