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Compute the sample variance

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Reference no: EM132474092

Given the sample data.

x: 23, 19, 13, 32, 27

(a) Find the range. (Enter an exact number.)

(b) Verify that Σx = 114 and Σx2 = 2,812. (For each answer, enter an exact number.)

Σx = 

Σx2 = 

(c) Use the results of part (b) and appropriate computation formulas to compute the sample variance s2 and sample standard deviation s. (For each answer, enter a number. Round your answers to two decimal places.)

s2 = 

s = 

(d) Use the defining formulas to compute the sample variance s2 and sample standard deviation s. (For each answer, enter a number. Round your answers to two decimal places.)

s2 = 

s = 

(e) Suppose the given data comprise the entire population of all x values. Compute the population variance σ2 and population standard deviation σ. (For each answer, enter a number. Round your answers to two decimal places.)

σ2 = 

σ =

Reference no: EM132474092

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