While running ANOVA in SPSS, the assumption of homogeneity of variance is not fulfilled then the ___________________is not robust enough to be used.

• A) Brown-Forsythe test
• B) Welch test
• C) Both Welch and Brown-Forsythe
• D) F test of the ANOVA

A researcher runs an independent sample t-test and finds p < 0.05. What does this imply?

• A) There is a significant difference between the groups
• B) Groups belong to the same population
• C) Means are equal
• D) There is no significant difference

Which factor can reduce the chances of finding a significant treatment effect?

• A) Lower z-scores
• B) Higher variability of scores
• C) Decreasing alpha
• D) Increasing sample size

Which alpha levels are often used to reduce the risk of Type I error?

• A) 0.90 or 0.95
• B) 0.05 or 0.10
• C) 0.20 or 0.50
• D) 0.01 or 0.001

One-way ANOVA is most similar to which statistical test when comparing only two groups?

• A) Chi-square test
• B) Correlation test
• C) Independent samples t-test
• D) Regression

What does an alpha level of .05 represent?

• A) The probability of Type II error
• B) A 5% risk of committing a Type I error
• C) The probability of sample bias
• D) The probability of z > 3

While running one-way ANOVA, the data is entered in the _____________ editor.

• A) Data link tab of the SPSS
• B) Data coding tab of SPSS
• C) Data view tab of the SPSS
• D) Data view tab of excel

Under which of the following situations do the t-statistic permit hypothesis testing?

• A) The sample size is not known
• B) Population mean is known
• C) Population mean is not known
• D) Population variance is known

At α = .05, what are the critical z-score boundaries for a two-tailed test?

• A) ±1.96
• B) ±2.50
• C) ±1.65
• D) ±3.00

A researcher codes men as 1 and women as 2 in SPSS to compare their exam scores. Which variable is this?

• A) Grouping variable
• B) Test variable
• C) Dependent variable
• D) Control variable

The estimated standard error is inversely related to the:

• A) Number of hypothesis
• B) Sample size
• C) Distribution method
• D) Number of objectives

Degrees of freedom for factor B in two-way ANOVA is calculated as:

• A) kB – 1
• B) N – K
• C) N – 1
• D) kA – 1

In which of the following statistical test, the researcher can compare more than two groups?

• A) Neither ANOVA nor t-test
• B) ANOVA
• C) ANOVA and t-test both
• D) T-test statistic

If a continuous variable is recoded into three equal groups, it can be treated as:

• A) Continuous dependent variable
• B) Factorial design
• C) Categorical independent variable
• D) Covariate

How many samples are compared in an independent-samples t-test?

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

Which of the following tests are also known as non-directional tests?

• A) One-tailed hypothesis tests
• B) Two-tailed hypothesis tests
• C) True hypothesis tests
• D) Null hypothesis tests

Which SPSS test checks the assumption of equal variances between groups?

• A) Shapiro-Wilk Test
• B) Kolmogorov-Smirnov Test
• C) Levene’s Test
• D) Chi-Square Test

In the calculation of independent sample t-test, standard error is always expected because (of):

• A) Researcher is incompetent
• B) Researcher uses a tentative calculating formula
• C) Researcher extracts a representative sample
• D) Researcher studies the whole population

In t- test, which of the following is used to denote the amount of expected error?

• A) Mean error
• B) Population error
• C) Standard error
• D) Sample error

Reducing the _____________for a hypothesis test also reduces the power of the test.

• A) Significance level
• B) Beta level
• C) Alpha level
• D) Distribution level