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The following data give the weight lost (in pounds) by a sample of the five members...

The following data give the weight lost (in pounds) by a sample of the five members of a health club at the end of two months of membership: 3 6 5 10 8

a) the sample mean

b) the sample standard deviation

math   Statistics-And-Probability   
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Answer #1

The sample size is n = 5. The provided sample data along with the data required to compute the sample mean X and sample variance s2 are shown in the table below: 36 25 100 64 234 10 Sum = 32 The sample mean A is computed as follows 32 X 6.4 Also, the sample variance s is Therefore, the sample sandartd deviation s is Ss7.3 2.702

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