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