1.

Find the mean and variance for the following frequencydistribution. Classes 0-30 30-60 60-90 90-120 120-150 150-180 180-210 Frequencies 2 3 5 10 3 5 2

Answer»

Find the mean and variance for the following frequency
distribution.
























Classes



0-30



30-60



60-90



90-120



120-150



150-180



180-210



Frequencies



2



3



5



10



3



5



2





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