Given the sample data. x: 23, 19, 13, 30, 25 (a)  Find the range. (Enter an exact number.)    (b) Verify that Σx = 110 and Σx2 = 2,584. (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 =

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.