A study is published with information about ages of people in a particular region. A sample of five residents from the region have the following ages, in years. Complete parts (a) through (d) below. 85 28 13 84 12 Find the sample standard deviation of these ages by using the defining formula s=∑xi−x2n−1, where n is the sample size and x is the sample mean. The standard deviation is

A study is published with information about ages of people in a particular region. A sample of five residents from the region have the following ages, in years. Complete parts (a) through (d) below. 85 28 13 84 12 Find the sample standard deviation of these ages by using the defining formula s=∑xi−x2n−1, where n is the sample size and x is the sample mean. The standard deviation is

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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Question

A study is published with information about ages of people in a particular region. A sample of five residents from the region have the following ages, in years. Complete parts (a) through (d) below.

Find the sample standard deviation of these ages by using the defining formula

s=∑xi−x2n−1,

where n is the sample size and

is the sample mean.

The standard deviation is

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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