If you have two nominal variables and you want to see if they are independent, which of the following statements is true?
conduct a chi-square test of independence |
||
use a non-parametric test |
||
both statements are true |
||
neither statement is true |
If you have two nominal variables and you want to see if they are independent, which...
The null hypothesis for a chi-square contingency test of independence for two variables always assumes that the variables are independent.AnswerTrueFalse
You want to know if the amount of physical space separating two people in conversation affects the amount of eye contact between them. You take a random sample of thirty people, place them standing 6 feet apart and ask them to conduct a scripted conversation. You measure the amount of time each person spends looking directly in the eyes of the conversational partner. You ask a different sample of thirty subjects to stand four feet apart and conduct the same...
A chi-square test was conducted to see if a person’s drink preferences are independent of their age group using data below. Coffee Softdrink Other 21-34 26 95 18 35-55 41 40 20 above 55 24 13 32 4i) What is d.f. to conduct test of independence? 4i) What is the critical value? 4.iii) Given chi-square test statistic is 59.405, you can conclude: (a) A person’s drink preference is independent of their age (b) A person’s drink preference is dependent on...
Suppose you have a sack of mixed potatoes, with 14 red, 10 all-blue, 7 Yukon Gold, and 20 Russett. You suspect that the farmer is selling the different varieties at different rates. You think that when she fills sacks of potatoes, she puts in lots of Russetts and not very many all-blues. What test do you use to determine if that's true or not? O Chi-square goodness of fit test (one-way chi- square) O Chi-square test of independence (two-way chi-square)...
10 points Save and You want to know if professional artists are more agreeable (1-15 scale) than non-artists. You recruit 100 of each, and compare their scores. What kind of statistical test does this call for? Chi-square for independence Correlation Dependent Samples t-test Chi-square for goodness of fit Single Mean Independent Samples t-test ANOVA
Assume that the failure times are independent Exponential random variables with mean ? You seek to conduct a chi-square test of the hypotheses H0: H7 at the 5% significance level. What is the observed value of the test statistic x2s? (correct to 3 decimal places)
Both For the chi Square test of independence, ANOVA, and Regression, there are two variables. Match the data types to the statistical method: Question 9 options: 123 Chi Square Test for Independence 123 Regression 123 ANOVA 1. Categorical – Categorical 2. Categorical – Numerical 3. Numerical – Numerical
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....
When testing the independence of variables from a two-way table of observed data, you have to use the: a. Standard normal table b. T-table c. Chi-square table d. Linear regression e. None of these
How to write a Null Hypothesis and Alternative Hypothesis for two independent nominal Chi Square test. Example variable: 1. Currently have COPD 2. Visits to the Doctors