Variance of the number of credit cards


On the first day of class last semester, 10 sutdents were asked about the number of credit cards in their wallet. The resulting data were summarized in the following frequency table:

Number of credit cards 0,1,2,3
Number of students 1,4,3,2

FInd the variance of the number of credit cards.

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Basic Statistics: Variance of the number of credit cards
Reference No:- TGS0111437

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