Identify the purpose of a Kruskal-Wallis test.

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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 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

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SCIE 211 Lab 3: Graphing and DataWorksheetPre-lab Questions:1. When should you use each of the following types of graphs? Fill answers in the table below.Type of Graph Used to showLine graphScatter plotBar graphHistogramPie Chart2. Several ways in which we can be fooled or misled by a graph were identified in the Lab 3Introduction. Find two examples of misleading graphs on the Internet and paste them below. Besure to identify why each graph is misleading. Data Charts:Circumference vs. Diameter for circular objectsDiameter Can 1 (cm) Can 2 (cm) Can 3 (cm)Trial 1Trial 2Trial 3MeanCircumference Can 1 (cm) Can 2 (cm) Can 3 (cm)Trial 1Trial 2Trial 3MeanScatter Plot Graph – Circumference Vs. DiameterIdentify 2 points of the Trendline.Y1 = ________ Y2 = _________X1 = ________ X2 = _________Calculate the Slope of the Trendline = Post-lab Questions:1. Answer the questions below. You will need to use the following equation to answer…

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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 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

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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 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

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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 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Answer 6

Chapter 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

Answer 7

Chapter 16, Problem 6CR

a.

To determine

Identify the purpose of a Kruskal-Wallis test.

Answer 8

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

Answer 9

b.

To determine

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

Answer 10

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Answer 11

c.

To determine

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 16.2 - Prob. 1SE Ch. 16.2 - Prob. 2SE Ch. 16.2 - Prob. 3SE Ch. 16.2 - Prob. 4SE Ch. 16.3 - A sample of 28 student scores on the chemistry...Ch. 16.3 - Prob. 6SE Ch. 16.4 - Prob. 7SE Ch. 16.4 - Prob. 8SE Ch. 16.5 - Prob. 9SE Ch. 16.5 - The results shown below are mean productivity...

Identify the purpose of a Kruskal-Wallis test.

Solution Summary: The author explains Kruskal-Wallis test, a non-parametric test used to test equality of medians of c independent samples, and the type of parametric test analogous to it.

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Identify the purpose of a Kruskal-Wallis test.

Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.

Identify the type of parametric test that is analogous to Kruskal-Wallis test.

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