1.

Find the mean andstandard deviation using short-cut method. xi 60 61 62 63 64 65 66 67 68 fi 2 1 12 29 25 12 10 4 5

Answer»

Find the mean and
standard deviation using short-cut method.






































xi



60



61



62



63



64



65



66



67



68



fi



2



1



12



29



25



12



10



4



5





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