Question 478388
Find the population mean, varience, and standard deviation of the following frequency distribution:
x Frequency
1 2
2 5
3 2
4 3
5 8

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A TI-83 or TI-84 can do this in a jiffy.
mean 3.5
variance = 1.4663^2 = 2.15
std = 1.4663
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Cheers,
Stan H.