Homework Answers
Correct options:
Test for association between two categorical variables
Compare a categorical variable across two independent samples
testa single categorical varable for goodness of fit to a proposed distribution
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The Chi square test is used to (select all that apply): Test for association between two...
A chi-square test for goodness of fit is used to examine the distribution of individuals across...
A chi-square test for goodness of fit is used to examine the distribution of individuals across three categories, and a chi-square test for independence is used to examine the distribution of individuals in a 2×3 matrix of categories. Which test has the larger value for df? a. The test for independence b. Both tests have the same df . c. The df value depends on the sizes of the samples that are used. d. The test for goodness of fit
A chi-square significance test is performed to examine the association between two categorical variables in a...
A chi-square significance test is performed to examine the association between two categorical variables in a 6 x 6 table. What are the degrees of freedom associated with the test statistic? df= 5
* (½ point) The Pearson Chi-square test is used to test hypotheses about what? Differences in proportions between two...
* (½ point) The Pearson Chi-square test is used to test hypotheses about what? Differences in proportions between two groups Differences in proportions between more than two groups Association between two categorical variables All of the above * (½ point) The paired t test is used to test hypotheses about what? Differences in proportions between two groups Differences in means between individuals Means of differences within individuals All of the above * (½ point) If one performs four hypothesis tests...
If I reject the null hypothesis of a Chi-Square Goodness-of-Fit Test, which of the following statement...
If I reject the null hypothesis of a Chi-Square Goodness-of-Fit Test, which of the following statement best summarizes my conclusion? There is sufficient evidence to conclude that the two variables are independent. There is sufficient evidence to conclude that the two variables are associated. There is not sufficient evidence to conclude that my proposed distribution does not fit the population. There is sufficient evidence to conclude that my proposed distribution does not fit the population.
The chi-square goodness of fit test can be used when: Select one: a. We conduct a...
The chi-square goodness of fit test can be used when: Select one: a. We conduct a multinomial experiment. b. We perform a hypothesis test to determine if a population has a normal distribution. c. We perform a hypothesis test to determine if two population variances significantly differ from each other. d. We conduct a binomial experiment. The x statistic from a contingency table with 6 rows and five columns will have Select one: a. 24 degrees of freedom b. 50...
Question 1 For Chi Square tests, all tests discussed can be used for both experiments and...
Question 1 For Chi Square tests, all tests discussed can be used for both experiments and surveys True False Question 2 Chi Square tests have an assumption of normality True False Question 3 For a Chi Square test of Association, you ask if mouse hair color (black, grey or white) is associated with whisker length (short, medium or long). The df for this analysis would be: Give answer as X Question 4 The value of X^2 can be negative, zero,...
lestion 1 The purpose of a Chi-Square test of Independence is to O examine relationships between...
lestion 1 The purpose of a Chi-Square test of Independence is to O examine relationships between two categorical variables. examine the relationship between an explanatory categorical variable and a response quantitative variable O examine the relationship between an explanatory quantitative variable and a response categorical variable O examine relationships between two quantitative variables. None of the above are true Question Help: Message instructor Submit Question MacBook Pro esc BO F3 F2 F4 55 76 # $ % 1 2 3...
When Chi-square distribution is used as a test of independence, the number of degrees of freedom...
When Chi-square distribution is used as a test of independence, the number of degrees of freedom is related to both the number of rows and the number of columns in the contingency table. Select one: True False Question 2 Answer saved Points out of 1.000 Flag question Question text A goodness of fit test can be used to determine if membership in categories of one variable is different as a function of membership in the categories of a second variable...
-A chi-square test for goodness-of-fit has a sample size of 50. What are the degrees of...
-A chi-square test for goodness-of-fit has a sample size of 50. What are the degrees of freedom for this chi square? A. 25 B. The degrees of freedom cannot be determined from the information provided. C. 50 D. 49 -Rodney wants to test the relationship between college graduation rank and annual income. If income is measured on a ratio scale, the appropriate relationship test for Rodney to use is the: A. chi square test of independence B. independent-samples t test...
(1 point) A chi-square independence test is to be conducted to decide whether an association exists between two var...
(1 point) A chi-square independence test is to be conducted to decide whether an association exists between two variables of a populations. One variable has 9 possible values and the other variable has 4. What are the degrees of freedom for the x-statistic? answer:
A chi-square significance test is performed to examine the association between two categorical variables in a 6 x 6 table. What are the degrees of freedom associated with the test statistic? df= 5
If I reject the null hypothesis of a Chi-Square Goodness-of-Fit Test, which of the following statement best summarizes my conclusion? There is sufficient evidence to conclude that the two variables are independent. There is sufficient evidence to conclude that the two variables are associated. There is not sufficient evidence to conclude that my proposed distribution does not fit the population. There is sufficient evidence to conclude that my proposed distribution does not fit the population.
The chi-square goodness of fit test can be used when: Select one: a. We conduct a multinomial experiment. b. We perform a hypothesis test to determine if a population has a normal distribution. c. We perform a hypothesis test to determine if two population variances significantly differ from each other. d. We conduct a binomial experiment. The x statistic from a contingency table with 6 rows and five columns will have Select one: a. 24 degrees of freedom b. 50...
lestion 1 The purpose of a Chi-Square test of Independence is to O examine relationships between two categorical variables. examine the relationship between an explanatory categorical variable and a response quantitative variable O examine the relationship between an explanatory quantitative variable and a response categorical variable O examine relationships between two quantitative variables. None of the above are true Question Help: Message instructor Submit Question MacBook Pro esc BO F3 F2 F4 55 76 # $ % 1 2 3...
(1 point) A chi-square independence test is to be conducted to decide whether an association exists between two variables of a populations. One variable has 9 possible values and the other variable has 4. What are the degrees of freedom for the x-statistic? answer:
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