The Practice of Statistics for AP - 4th Edition

4th Edition

ISBN: 9781429245593

Author: Starnes, Daren S., Yates, Daniel S., Moore, David S.

Publisher: Macmillan Higher Education

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Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Chapter 2.2, Problem 68E

To determine

To explain:about the shape of the weight distribution

Expert Solution & Answer

Answer to Problem 68E

Women's weights are skewed to the right:

Explanation of Solution

Given:

Mean 141.7 pounds and median 133.2 pounds (age: 20 to 29)

The first and third quartiles are 118.3 pounds and 157.3 pounds.

Calculation:

The weights of women have the following summary statistics:

M=133.2Q1=118.3Q3=157.3

Women's weights are skewed to the right: This makes the mean higher than the median, and it is also revealed in the differences:

M−Q1=133.2−118.3=14.9 pounds

And

Q3−M=157.3−133.2=24.1 pounds

Conclusion:

Therefore, women's weights are skewed to the right:

Chapter 2.2, Problem 67E

Chapter 2.2, Problem 69E

Chapter 2 Solutions

The Practice of Statistics for AP - 4th Edition

Ch. 2.1 - Prob. 1.1CYU Ch. 2.1 - Prob. 1.2CYU Ch. 2.1 - Prob. 1.3CYU Ch. 2.1 - Prob. 1.4CYU Ch. 2.1 - Prob. 2.1CYU Ch. 2.1 - Prob. 2.2CYU Ch. 2.1 - Prob. 2.3CYU Ch. 2.1 - Prob. 3.1CYU Ch. 2.1 - Prob. 3.2CYU Ch. 2.1 - Prob. 3.3CYU

Ch. 2.1 - Prob. 4.1CYU Ch. 2.1 - Prob. 4.2CYU Ch. 2.1 - Prob. 4.3CYU Ch. 2.1 - Prob. 1E Ch. 2.1 - Prob. 2E Ch. 2.1 - Prob. 3E Ch. 2.1 - Prob. 4E Ch. 2.1 - Prob. 5E Ch. 2.1 - Prob. 6E Ch. 2.1 - Prob. 7E Ch. 2.1 - Prob. 8E Ch. 2.1 - Prob. 9E Ch. 2.1 - Prob. 10E Ch. 2.1 - Prob. 11E Ch. 2.1 - Prob. 12E Ch. 2.1 - Prob. 13E Ch. 2.1 - Prob. 14E Ch. 2.1 - Prob. 15E Ch. 2.1 - Prob. 16E Ch. 2.1 - Prob. 17E Ch. 2.1 - Prob. 18E Ch. 2.1 - Prob. 19E Ch. 2.1 - Prob. 20E Ch. 2.1 - Prob. 21E Ch. 2.1 - Prob. 22E Ch. 2.1 - Prob. 23E Ch. 2.1 - Prob. 24E Ch. 2.1 - Prob. 25E Ch. 2.1 - Prob. 26E Ch. 2.1 - Prob. 27E Ch. 2.1 - Prob. 28E Ch. 2.1 - Prob. 29E Ch. 2.1 - Prob. 30E Ch. 2.1 - Prob. 31E Ch. 2.1 - Prob. 32E Ch. 2.1 - Prob. 33E Ch. 2.1 - Prob. 34E Ch. 2.1 - Prob. 35E Ch. 2.1 - Prob. 36E Ch. 2.1 - Prob. 37E Ch. 2.1 - Prob. 38E Ch. 2.1 - Prob. 39E Ch. 2.1 - Prob. 40E Ch. 2.2 - Prob. 1.1CYU Ch. 2.2 - Prob. 1.2CYU Ch. 2.2 - Prob. 1.3CYU Ch. 2.2 - Prob. 2.1CYU Ch. 2.2 - Prob. 2.2CYU Ch. 2.2 - Prob. 2.3CYU Ch. 2.2 - Prob. 2.4CYU Ch. 2.2 - Prob. 2.5CYU Ch. 2.2 - Prob. 3.1CYU Ch. 2.2 - Prob. 3.2CYU Ch. 2.2 - Prob. 3.3CYU Ch. 2.2 - Prob. 41E Ch. 2.2 - Prob. 42E Ch. 2.2 - Prob. 43E Ch. 2.2 - Prob. 44E Ch. 2.2 - Prob. 45E Ch. 2.2 - Prob. 46E Ch. 2.2 - Prob. 47E Ch. 2.2 - Prob. 48E Ch. 2.2 - Prob. 49E Ch. 2.2 - Prob. 50E Ch. 2.2 - Prob. 51E Ch. 2.2 - Prob. 52E Ch. 2.2 - Prob. 53E Ch. 2.2 - Prob. 54E Ch. 2.2 - Prob. 55E Ch. 2.2 - Prob. 56E Ch. 2.2 - Prob. 57E Ch. 2.2 - Prob. 58E Ch. 2.2 - Prob. 59E Ch. 2.2 - Prob. 60E Ch. 2.2 - Prob. 61E Ch. 2.2 - Prob. 62E Ch. 2.2 - Prob. 63E Ch. 2.2 - Prob. 64E Ch. 2.2 - Prob. 65E Ch. 2.2 - Prob. 66E Ch. 2.2 - Prob. 67E Ch. 2.2 - Prob. 68E Ch. 2.2 - Prob. 69E Ch. 2.2 - Prob. 70E Ch. 2.2 - Prob. 71E Ch. 2.2 - Prob. 72E Ch. 2.2 - Prob. 73E Ch. 2.2 - Prob. 74E Ch. 2.2 - Prob. 75E Ch. 2.2 - Prob. 76E Ch. 2 - Prob. 1CRE Ch. 2 - Prob. 2CRE Ch. 2 - Prob. 3CRE Ch. 2 - Prob. 4CRE Ch. 2 - Prob. 5CRE Ch. 2 - Prob. 6CRE Ch. 2 - Prob. 7CRE Ch. 2 - Prob. 8CRE Ch. 2 - Prob. 9CRE Ch. 2 - Prob. 10CRE Ch. 2 - Prob. 11CRE Ch. 2 - Prob. 12CRE Ch. 2 - Prob. 1PT Ch. 2 - Prob. 2PT Ch. 2 - Prob. 3PT Ch. 2 - Prob. 4PT Ch. 2 - Prob. 5PT Ch. 2 - Prob. 6PT Ch. 2 - Prob. 7PT Ch. 2 - Prob. 8PT Ch. 2 - Prob. 9PT Ch. 2 - Prob. 10PT Ch. 2 - Prob. 11PT Ch. 2 - Prob. 12PT Ch. 2 - Prob. 13PT

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