Statistical Methods Quiz Part 3

What is regression analysis used for?

• To examine the relationship between variables

• To analyze categorical data

• To compare means of groups

• To predict consumer choices

When should you use multinomial regression?

• When dependent variable has two categories

• When dependent variable has three or more categories

• When independent variables are categorical only

• When data is normally distributed

What does the Chi-Square Test of Independence determine?

• If there is a significant relationship between two categorical variables

• If means of groups are equal

• If data is normally distributed

• If independent variables are correlated

What is ANOVA used for?

• To compare means of two groups

• To compare means of three or more groups

• To analyze categorical data

• To predict trends

What is the assumption of independence in MANOVA?

• Observations in each group must be independent

• Dependent variables should be normally distributed

• Independent variables should not be correlated

• Sample size must be large enough

When should you use the Kruskal-Wallis test?

• When comparing means of two groups

• When comparing medians of three or more independent groups

• When data is normally distributed

• When dependent variable is categorical

What is the Mann-Whitney U test used for?

• To compare means of two groups

• To compare medians of two independent groups

• To analyze categorical data

• To predict trends

What is the primary purpose of using the Wilcoxon signed-rank test?

• To compare means of two related groups

• To assess the relationship between two continuous variables

• To compare medians of two independent groups

• To analyze variance among multiple groups

When is it appropriate to use logistic regression?

• When data is normally distributed

• When the dependent variable is continuous

• When the dependent variable is binary

• When the independent variables are all categorical

What does the term 'effect size' refer to in statistical analysis?

• The difference in means between two groups

• The sample size required for a study

• The probability of obtaining a significant result

• The magnitude of a relationship between variables