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Mathematics 13 Online
OpenStudy (anonymous):

a fair six-sided die, with sides numbered 1,1,2,3,4,5 is thrown. find the mean and variance of the score?

OpenStudy (datanewb):

Well first you should find the mean, as the mean is used to calculate the variance. The mean is the average, and it is calculated by adding all of the possible scores by the total number of scores.

OpenStudy (datanewb):

Sorry, I meant adding all the scores and dividing by the total number of scores.

OpenStudy (anonymous):

yeah so is the mean= 16/6?

OpenStudy (anonymous):

and then subtract each of the value from the mean and square them to get the variance?

OpenStudy (datanewb):

Yes, well done. That is correct.

OpenStudy (datanewb):

square them and take their average that is.

OpenStudy (anonymous):

okk i got it, thanxxx a lot broo

OpenStudy (datanewb):

No problem. It seems you already knew how to work the problem. :)

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