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Math Statistics Applied Statistics in Business and Economics

Test whether there is any difference in the median volatility among the four portfolios at α = 0.05 .

Test whether there is any difference in the median volatility among the four portfolios at α = 0.05 .

Solution Summary: The author explains how to perform a Kruskal-Wallis test using MegaStat.

Applied Statistics in Business and Economics

Applied Statistics in Business and Economics

5th Edition

ISBN: 9780077837303

Author: David Doane, Lori Seward Senior Instructor of Operations Management

Publisher: McGraw-Hill Education

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 16.5, Problem 9SE

a.

To determine

Test whether there is any difference in the median volatility among the four portfolios at α=0.05.

b.

To determine

Use One-factor ANOVA to compare the means.

Identify whether the same conclusion has arrived.

c.

To determine

Construct the histogram for each of the sample data.

Explain whether the given data justify the normality assumption.

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Chapter 16.4, Problem 8SE

Chapter 16.5, Problem 10SE

Chapter 16 Solutions

Applied Statistics in Business and Economics

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