The word “analysis” in ANOVA means:

• A) Comparing means only
• B) Summing up variances
• C) Dividing total variability into components
• D) Testing normality

What does the t statistic allow researchers to do?

• A) Estimate population variance
• B) Test only large samples
• C) Avoid using sample data
• D) Test hypotheses when population variance is unknown

If a researcher wants to compare self-esteem levels of employed vs. unemployed individuals, the independent variable is:

• A) Self-esteem
• B) Mean score
• C) Employment status
• D) Age

If the p-value from ANOVA is greater than 0.05, we:

• A) Reject the null hypothesis
• B) Fail to reject the null hypothesis
• C) Run Tukey test automatically
• D) Recode the dependent variable

Which factor increases the chances of finding a significant treatment effect?

• A) Larger sample size
• B) Lower z-scores
• C) Higher alpha
• D) Smaller variability

Changing from a regular two-tailed test to a one-tailed test __________the power of the hypothesis test.

• A) Constant
• B) Increases
• C) Decreases
• D) Falls

When research examines ANOVA having two factors or two independent variables, it is called:

• A) One-way ANOVA
• B) Three-way ANOVA
• C) Two-Way ANOVA
• D) None of the given options

Which test has more power: one-tailed or two-tailed?

• A) Neither
• B) One-tailed test
• C) Two-tailed test
• D) Both equal

While running ANOVA in SPSS, the homogeneity of variance option gives us the _____________for homogeneity of variances.

• A) t-statistics test
• B) Manual test
• C) Levene’s test
• D) z- test

Which of the following describes the number of scores in a sample that are independent and free to vary?

• A) Null hypothesis
• B) Independent variable
• C) Degrees of freedom
• D) Alternate hypothesis

SPSS ___________a researcher to test assumption before starting any statistical test.

• A) Partially allows
• B) Randomly allows
• C) Never allows
• D) Fully Allows

For ANOVA, the denominator of the F-ratio is called:

• A) The error term
• B) Standard variable
• C) Standard error
• D) Standard variance

For correcting the bias in the standard error is to combine the two sample variances into a single value is called:

• A) Standard mean
• B) Pooled variance
• C) Standard deviation
• D) Standard variance

In SPSS, where can you change the confidence interval level?

• A) Data View
• B) Transform menu
• C) Options menu
• D) Output Window

The alpha level for a hypothesis test serves _____ very important functions.

• A) Two
• B) One
• C) Three
• D) Zero

If the assumption of independence of observations is violated, what happens?

• A) Confidence interval increases
• B) Normality assumption fails
• C) Variance becomes zero
• D) t-test results may be invalid

The independent variable in an independent samples t-test is:

• A) Continuous
• B) Ratio
• C) Categorical
• D) Interval

The two independent variables in a two-way ANOVA are referred to as:

• A) Independent and Dependent
• B) Level 1 and Level 2
• C) Main and Sub-factor
• D) Factor A and Factor B

Which of the following states that there is an effect?

• A) Population mean
• B) Ho
• C) H1
• D) Sample mean

Which tests are used in ANOVA when homogeneity of variance is violated?

• A) Chi-square and Mann-Whitney U
• B) Levene’s test and Kolmogorov-Smirnov test
• C) Welch and Brown-Forsythe tests
• D) Shapiro-Wilk and Kruskal-Wallis