An Introduction to Statistical Methods and Data Analysis

7th Edition

ISBN: 9781305269477

Author: R. Lyman Ott, Micheal T. Longnecker

Publisher: Cengage Learning

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Textbook Question

Chapter 4.18, Problem 114SE

As part of a study to determine factors that may explain differences in animal species relative to their size, the following body masses (in grams) of 50 different bird species were reported in the paper “Temperature and the Northern Distributions of Wintering Birds,” by Richard Repasky (1991).

Chapter 4.18, Problem 114SE, As part of a study to determine factors that may explain differences in animal species relative to

a. Does the distribution of the body masses appear to follow a normal distribution? Provide both a graphical and a quantitative assessment.
b. Repeat part (a), with the outlier 448.0 removed.
c. Determine the sample mean and median with and without the value 448.0 in the data set.
d. Determine the sample standard deviation and MAD with and without the value 448.0 in the data set.

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Chapter 4.18, Problem 113SE

Chapter 5.12, Problem 1E

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Chapter 4 Solutions

An Introduction to Statistical Methods and Data Analysis

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Solution Summary: The author explains how to identify whether the distribution of the body masses follows normal distribution or not by using graphical assessment.

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