EVALUATION RESEARCH EXAM 3 QUESTIONS

Familywise error increases the likelihood of a Type I error.

TRUE

Which of the following statements describes a Type I error?

A TRUE NULL IS ERRONEOUSLY REJECTED

Matched pair designs are used when researchers need experimental and control groups.

TRUE

Observed frequencies are the empirical values that appear in the crosstabs table.

TRUE

The main types of dependent sample tests are matched pairs and repeated measures.

TRUE

The null hypothesis assumes that the difference between the population and the sample is sampling error.

TRUE

Tukey's HSD test is a post hoc test commonly used with ANOVA analysis.

TRUE

Two unrelated variables are considered statistically independent.

TRUE

t Tests require a two class, categorical variable and a continuous variable.

TRUE

Why do dependent samples require different types of t tests than independent samples?

BECAUSE MANIPULATIONS ARE NECESSARY WITH DEPENDENT SAMPLES

Which of the following is an example of a post hoc test used with ANOVA analysis?

BONFERRONI

Before conducting a hypothesis test, what must a researcher do?

CALCULATE A SAMPLE STATISTIC

Which of the following is the fourth step of hypothesis testing?

COMPUTE THE OBTAINED VALUE OF THE STATISTIC

In an ANOVA test, the dependent variable must be in which of the following forms?

CONTINUOUS

In a chi-square test, what is the degrees of freedom based upon?

CROSSTABS TABLE

What does the chi-square critical value depend on?

DEGREES OF FREEDOM AND ALPHA

How is within-group degrees of freedom calculated?

DFW = N - K

Which of the following statements describes how the obtained F value is calculated?

DIVIDING MSB BY MSW

What is being compared in a Tukey's HSD test?

EACH GROUP'S MEAN TO EACH OTHER GROUP'S MEAN

Hypothesis testing draws conclusions about samples.

FALSE

In dependent sampling designs, the two samples being used are unrelated.

FALSE

Step 2 of a hypothesis test is calculating the test statistic.

FALSE

The ANOVA test is used when the independent variable has two or more classes.

FALSE

The chi-square test is used with continuous variables.

FALSE

The independent variable in a t test is continuous.

FALSE

The null hypothesis is rejected if the critical value exceeds the obtained value.

FALSE

Which of the following measures is an ordinal measures of association?

GAMMA AND SOMERS'd

How does a researcher determine which test to use in a hypothesis test?

NONE OF THESE

When is a two-tailed non-directional hypothesis test used?

NONE OF THESE

Which of the following statements accurately describes the purpose of an ANOVA analysis?

IT COMBINES MEANS AND VARIANCES TO TEST FOR SIGNIFICANT DIFFERENCES

Which of the following is true about the chi-square distribution?

IT IS BOUNDED TO THE LEFT AT ZERO

Which of the following statements is accurate when two variables are statistically independent?

KNOWING ONE WILL NOT HELP PREDICT THE OTHER

Which measure of association is used with nominal data?

LAMBDA AND CRAMER'S V

Which of the following is considered a dependent sample t test?

MATCHED PAIRS AND REPEATED MEASURES

Which of the following is NOT an example of a bivariate inferential test?

MULTIVARIATE REGRESSION

Degrees of freedom are included in the calculation of an ANOVA test.

TRUE

Which of the following is an example of a measure of association used with ANOVA analysis?

OMEGA SQUARE

Which of the following is the proper test to use when the independent samples are divided into groups and the population variances are equal?

POOLED VARIANCE

What point in time are the measurements taken in before/after designs?

PRIOR TO/AFTER AN INTERVENTION

Which of the following designs is common for evaluating programs?

REPEATED MEASURE DESIGNS

Which of the following are considered types of independent sample t tests?

SHARED VARIANCE AND POOLED VARIANCE

Which of the following is an asymmetrical ordinal measurement?

SOMERS' d

Which of the following statistical curves is the chi-square most similar to?

T CURVE

Which of the following statements describes the only conclusion that can be made from an ANOVA analysis?

THAT ONE GROUP MEAN IS DIFFERENT FROM ANOTHER

Which of the following provides a definition for within-group variance?

THE AMOUNT OF DIVERSITY THAT EXISTS WITHIN A SINGLE GROUP

When a sample statistic is not equal to a population parameter, which conceptualization is accurate?

THE DISPARITY COULD REPRESENT A LEGITIMATE STATISTICAL EFFECT AND TRUE DISCREPANCY EXISTS BETWEEN THE SAMPLE STATISTIC AND POPULATION PARAMETER

Which of the following specifies the distribution that is used with an ANOVA test statistic?

THE F DISTRIBUTION

Which of the following is an assumption of inferential analysis?

THE NULL HYPOTHESIS IS TRUE

Which of the following statements is true in independent sampling designs?

THE SELECTION OF ONE SAMPLE DOES NOT AFFECT THAT OF ANOTHER

What do measures of association indicate?

THE STRENGTH OF THE MAGNITUDE OR A RELATIONSHIP

What does the alternative hypothesis predict?

THE VARIABLES BEING EXAMINED ARE RELATED

Which of the following is NOT a piece of information needed to find the critical value of t, using the t table?

THE VARIANCE

Which of the following statements is accurate concerning degrees of freedom?

THEY ARE PART OF STEP 2 IN HYPOTHESIS TESTING

What is the goal of hypothesis testing?

TO DECIDE WHETHER TO REJECT/RETAIN THE NULL

A Type II error is retaining a false null hypothesis.

TRUE

As the number of degrees of freedom increases the chi-square distribution becomes more normal.

TRUE

Between and within group variance are analyzed in an ANOVA test.

TRUE

Chi-square test is an example of a bivariate inferential test.

TRUE

Expected frequencies are seen in which of the following circumstance?

WHEN THE NULL IS TRUE

What is the proper statistical distribution for two population tests?

Z CURVE