To explain:Why the test for homogeneity follows the same procedures as the test for independence.

remolatg
2021-02-01
Answered

To explain:Why the test for homogeneity follows the same procedures as the test for independence.

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Khribechy

Answered 2021-02-02
Author has **100** answers

The procedures for the chi-square test for homogeneity are identical to those for a chi-square test for independence. The data differs for the two tests. Tests for independence are used to determine whether there is a significant relationship between two categorical variables from a single population. A single population is segmented based on the value of two variables. Hence, there will be a column variable and a row variable.

A chi-square test for the homogeneity of proportions can be used to compare the population proportions from two or more independent samples, it determines whether the frequency counts are distributed identically across different populations.

Thus, the test for homogeneity follows the same procedures as the test for independence because the assumptions for performing the chi-square test for independence and chi-square test for homogeneity are the same.

A chi-square test for the homogeneity of proportions can be used to compare the population proportions from two or more independent samples, it determines whether the frequency counts are distributed identically across different populations.

Thus, the test for homogeneity follows the same procedures as the test for independence because the assumptions for performing the chi-square test for independence and chi-square test for homogeneity are the same.

asked 2022-03-15

Assume that you have invited back to your high school to be a guest teacher for a day. You task is to explain the importance of Chi square test in real life applications of Statistics. Your target audience is students in Grade 10 (or Ordinary Level students). short speech with examples.

asked 2022-03-03

A bullying prevention program is underway in the phoenix school districts. The researchers ran multiple analyses with the baseline data. The researchers want to determine if there is a relationship between age (13, 14, 15, 16, etc.) and victimization score (measured on a multi-item, Likert scale). What type of statistical test should be used?

Group of answer choices

Chi Square

Independent t-test

Correlation Analysis

Dependent t-test

Standard Deviation

Group of answer choices

Chi Square

Independent t-test

Correlation Analysis

Dependent t-test

Standard Deviation

asked 2022-04-21

Is age group related to the device people prefer to use to watch television? A research firm sought to answer this question by surveying a random sample of 260 U.S. adults age 18 and over. The results are shown below.

$\begin{array}{|ccccc|}\hline & & \text{Device}& & \\ & & \text{Television}& \text{Computer}& \text{Mobile device}\\ & 18-24& 19& 6& 12\\ \text{Age Group}& 25-34& 23& 7& 39\\ & 35-54& 34& 8& 28\\ & 55+& 33& 8& 13\\ \hline\end{array}$

Which of the following tests should be used?

Either (a) or (c).

A chi-square goodness of fit test.

A z-test for the difference of two proportions.

A chi-square test for homogeneity.

A chi-square test for independence.

Which of the following tests should be used?

Either (a) or (c).

A chi-square goodness of fit test.

A z-test for the difference of two proportions.

A chi-square test for homogeneity.

A chi-square test for independence.

asked 2022-04-23

In Unit 3 we studied several hypothesis tests: 1-Prop z-Test, 2-Prop z-Test, 1-Sample t-Test, 2- Sample t-Test, Paired t-Test, Chi-Square Goodness-of-Fit Test, and Chi-Square Test for Independence. For each scenario, identify the hypothesis test that should be applied.

1. c) A researcher wants to test a claim that students perform better on math problems when not listening to music as compared to when they do listen to music.

2. d) A researcher wants to test a claim that the average amount of time that kids spend reading books has decreased.

3. e) A researcher wants to test a claim that there is an association between socoal media an mood.

1. c) A researcher wants to test a claim that students perform better on math problems when not listening to music as compared to when they do listen to music.

2. d) A researcher wants to test a claim that the average amount of time that kids spend reading books has decreased.

3. e) A researcher wants to test a claim that there is an association between socoal media an mood.

asked 2020-12-14

A chi-square value of 6.15 is calculated from data in a

26.217

31.410

21.026

16.919

asked 2022-03-01

1. When the null hypothesis for a chi square test for independence is true.

a. a large difference between the observed frequencies and the expected frequencies.

b.little or no difference between the observed frequencies and the expected frequencies.

c. no difference between the observed frequencies and the marginals

d. no differences between the row and the column marginal

2. In the Chi Square test, degrees of freedom are calculated as :

a. N-1

b.${N}_{1}+{N}_{2}-2$

c. (r+1)(c+1)

d. (r-1)(c-1)

a. a large difference between the observed frequencies and the expected frequencies.

b.little or no difference between the observed frequencies and the expected frequencies.

c. no difference between the observed frequencies and the marginals

d. no differences between the row and the column marginal

2. In the Chi Square test, degrees of freedom are calculated as :

a. N-1

b.

c. (r+1)(c+1)

d. (r-1)(c-1)

asked 2022-03-14

What kinds of research questions are appropriate to use with a chi-square analysis?