The variables considered in a chi-squared test used to evaluate a contingency table A. have small...
The variables considered in a chi-squared test used to evaluate a contingency table A. have small standard deviations. B. can be averaged. C. are normally distributed. D. have rounding errors. E. are categorical.
Homework Answers
It is one of the assumption of the Chi square test used to evaluate a contingency table that the variables are categorical in nature. Hence option E. is correct one.
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The variables considered in a chi-squared test used to evaluate
a contingency table A. have small...
A chi-squared test statistic in a test of a contingency table that is equal to zero...
A chi-squared test statistic in a test of a contingency table that is equal to zero means: The two nominal variables are independent. The two nominal variables are equal. The two nominal variables have the same proportions listed in H0. All of these choices.
A 3x3 contingency table produced a chi-squared = 6.5. In evaluating the relationship between the variables...
A 3x3 contingency table produced a chi-squared = 6.5. In evaluating the relationship between the variables in the table at the .05 level of significance, the conclusion should be ________. A. accept the null hypothesis B. reject the null hypothesis C. the magic number is 3.84 D. alpha = level of significance =1.96 E. alpha = level of significance = .10
Q1: Match the statement to the correct choice. Number of degrees of freedom in the chi-squared...
Q1: Match the statement to the correct choice. Number of degrees of freedom in the chi-squared test of independence in a 4 x 2 table. (a) 0 (b) 3 (c) 7 (d) 8 Q2: Determine if the following statement is true or false. If you believe that the statement is false, briefly explain why you think it is false. The chi-squared test of independence only detects linear association between variables in a contingency table. A: The statement is true....
A) If we have a contingency table with two categorical variables we would need to use...
A) If we have a contingency table with two categorical variables we would need to use ___________________________________ to measure the association between the two variables a)Chi-Square test b) t-test c) ANOVA d) Correlation Some High School Education High School Degree or More Total Salary > $45,000 4 27 31 Salary < $45,000 36 19 55 Total 40 46 86 B) Using the table above, find the joint proportion of having a salary greater than $45,000 and a High School Degree...
Problem 3: Understanding the chi-squared test of independence of categorical random variables The problem has two...
Problem 3: Understanding the chi-squared test of independence of categorical random variables The problem has two sub-problems that should help understand the chi-squared test of independence. a) For the chi-squared test of independence between two categorical variables, we use the fact that the MLE for the probability that a multinomial trial is of category i is ni /n, where ni is the number of trials that fall into category i, and n is the total number of trials. Prove the...
The effect size measure for a large chi square contingency table analysis is? A. Eta squared...
The effect size measure for a large chi square contingency table analysis is? A. Eta squared B. Cohen’s D C. Cramer’s V D. All of these are appropriate
For each problem, select the best response. (a) Chi-square tests are most appropriate for data that...
For each problem, select the best response. (a) Chi-square tests are most appropriate for data that A. have small standard deviations. B. are normally distributed. C. have rounding errors. D. can be averaged. E. are categorical. (b) A ?2 statistic provides persuasive evidence against the null hypothesis if its value is A. a large negative number. B. close to 0. C. close to 1. D. a large positive number. E. 1.96 (c) A study was performed to examine the personal...
When performing a chi squaredχ2 test for independence in a contingency table with r rows and...
When performing a chi squaredχ2 test for independence in a contingency table with r rows and c columns, determine the upper-tail critical value of the test statistic in each of the following circumstances. b. alpha = 0.01, r = 5, c = 3 c. alpha = 0.01, r = 5, c = 4 d. alpha = 0.01, r = 3, c = 4 e. alpha = 0.01, r = 4, c = 5 QUESTION: what are the critical values for...
(2 points) For each problem, select the best response. (a) A study was performed to examine...
(2 points) For each problem, select the best response. (a) A study was performed to examine the personal goals of children in grades 4, 5 and 6. A random sample of students was selected from grades 4, 5 and 6 from schools in Idaho. The students received a questionnaire regarding achieving personal goals. They were asked what they would most like to do at school: make good grades, be good at sports, or be popular. Each student's gender was also...
Which of the following is a similarity between ANOVA and Chi-Square tests? A. The p-value decreases...
Which of the following is a similarity between ANOVA and Chi-Square tests? A. The p-value decreases as the test statistic increases. B. Only one variable is a categorical variable. C. The two variables are categorical variables. D. They assume that the data are normally distributed. E. They make inferences about the population mean.
(2 points) For each problem, select the best response. (a) A study was performed to examine the personal goals of children in grades 4, 5 and 6. A random sample of students was selected from grades 4, 5 and 6 from schools in Idaho. The students received a questionnaire regarding achieving personal goals. They were asked what they would most like to do at school: make good grades, be good at sports, or be popular. Each student's gender was also...
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