1. Find the standard deviation of the series : 23, 25, 26, 27, 29.
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Answer:
Here n= 5 sum of all observations (x)=130 and sum of sq of all observations (y)=3400
Now S.D.=√y÷n-(x÷n)^2
S.D=√3400÷5-(130÷5)^2
=√680-676
=2
Step-by-step explanation:
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