Question 1

The inference of the relationship is indexed by eta-squared for all statistical test.

Accepted Answer

A) True 
 B)False

Question 2

In the study above what type of statistical test,should Dr.Nan use (if subjects have been matched on age or IQ)?

Accepted Answer

A) Independent t-test 
B) Correlated t-test 
C) One-way ANOVA (between subjects design) 
D) One-way ANOVA (repeated measures) 
E) none of these

Question 3

If a dependent variable turns out to be highly skewed,then it might be decided to focus on a _____ rather than a _____ to analyze the relationship between two variables.

Accepted Answer

A) mean;median 
B) median;mean 
C) mean;mode 
D) mode;Pearson correlation

Question 4

Sometimes research designs involve one between-subjects independent variable and one within-subjects independent variable.

Accepted Answer

A) True 
 B)False

Question 5

Dr.Hinson used a One-Way ANOVA,repeated measures and has set his alpha level at .05 nondirectional.He reported the following: F(2,19)=6.99.Based on this information what can you conclude?

Accepted Answer

A) There was a significant difference between groups (reject null hypothesis) 
B) There was no significant difference between groups (do not reject null hypothesis) 
C) A type II error has been committed 
D) There is a significant main effect of your independent variable 
E) None of these

Question 6

The choice of which distributional parameter to compare across groups is often dictated by theory or the substantive question of interest.

Accepted Answer

A) True 
 B)False

Question 7

If you have a small sample size what type of statistics should you use?

Accepted Answer

A) parametric statistics 
B) nonparametric statistics 
C) descriptive statistics 
D) convert to z-scores 
E) None of these

Question 8

When one or both variables are measured on an ordinal level that seriously departs from interval level characteristics,Pearson correlation is the test of choice.

Accepted Answer

A) True 
 B)False

Question 9

A correlated t-test can be used to analyze the relationship between 2 variables except when_____.

Accepted Answer

A) the independent variable has 2 levels 
B) the independent variable is between subject in nature 
C) the groups have been matched on some variable 
D) the dependent variable is quantitative in nature 
E) except nothing,all of these are correct

Question 10

A psychologist's is studying the affects of Ritalin on concentration in 40 children that have been matched on age and IQ.Twenty of the children receive Ritalin and are asked to take an exam that measures their concentration.The other 20 children did not receive Ritalin,but a placebo pill and took the same exam.After graphing this data,the researcher realizes that the data is not normally distributed.What should he do?

Accepted Answer

A) Increase your sample size 
B) use a nonparametric test to analyze data 
C) Give up and start over 
D) Both a & b 
E) None of these

Question 11

Dr.James used a Pearson correlation and found that there was a relationship between the number of publications of faculty members and the number of graduate programs offered (r=.85).To determine the nature of the relationship what should Dr.James do?

Accepted Answer

A) Inspect the sign of r (positive or negative) 
B) Use eta-squared 
C) Perform a post-hoc test 
D) Use coefficient of determination r2 
E) both b & d

Question 12

Some psychologists have argued that the question "is there a relationship between two variables" is meaningless,in part because:

Accepted Answer

A) psychological research is difficult to carry out 
B) the alternative hypothesis is almost always false 
C) the null hypothesis is almost always false 
D) empirical relationships are,in fact,very rare

Question 13

If means are the focus,then a _____ test is usually the analysis of choice.

Accepted Answer

A) chi square 
B) log-linear 
C) parametric 
D) nonparametric

Question 14

Statistical techniques for analyzing the relationship between three or more variables are referred to as:

Accepted Answer

A) nonparametric statistics 
B) trivariate statistics 
C) multiple correlations 
D) multivariate statistics

Question 15

Generally speaking,parametric methods are not conducive to analyzing qualitative variables.

Accepted Answer

A) True 
 B)False

Question 16

When both of the variables under study are qualitative and between-subjects in nature,the appropriate method of data analysis is the:

Accepted Answer

A) chi square test 
B) Pearson correlation 
C) multiple regression 
D) none of these

Question 17

For an experiment that includes four levels of the single independent variable with 4 levels and,4 different groups are compared,the most appropriate statistical test is the:

Accepted Answer

A) correlate t-test 
B) independent t-test 
C) one-way ANOVA (between subjects) 
D) ANOVA (repeated measures) 
E) Two-way ANOVA (between subjects)

Question 18

The observed distribution may bias one's decision about a parameter to focus on.

Accepted Answer

A) True 
 B)False

Question 19

______ is the statistic used to indicate the strength of relationship between a criterion variable and several predictors in the context of a linear model

Accepted Answer

A) Eta2 
B) R2 
C) r2

Question 20

A non-parametric test should be pursued if there is reason to believe that the distributional assumptions of the corresponding parametric test have been violated to the extent that the parametric test is not robust.

Accepted Answer

A) True 
 B)False

Exam 17: Overview and Extension: Statistical Tests for More Complex Designs

The inference of the relationship is indexed by eta-squared for all statistical test.

In the study above what type of statistical test,should Dr.Nan use (if subjects have been matched on age or IQ) ?

If a dependent variable turns out to be highly skewed,then it might be decided to focus on a _ rather than a _ to analyze the relationship between two variables.

Sometimes research designs involve one between-subjects independent variable and one within-subjects independent variable.

Dr.Hinson used a One-Way ANOVA,repeated measures and has set his alpha level at .05 nondirectional.He reported the following: F(2,19) =6.99.Based on this information what can you conclude?

The choice of which distributional parameter to compare across groups is often dictated by theory or the substantive question of interest.

If you have a small sample size what type of statistics should you use?

When one or both variables are measured on an ordinal level that seriously departs from interval level characteristics,Pearson correlation is the test of choice.

A correlated t-test can be used to analyze the relationship between 2 variables except when_____.

Dr.James used a Pearson correlation and found that there was a relationship between the number of publications of faculty members and the number of graduate programs offered (r=.85) .To determine the nature of the relationship what should Dr.James do?

Some psychologists have argued that the question "is there a relationship between two variables" is meaningless,in part because:

If means are the focus,then a _____ test is usually the analysis of choice.

Statistical techniques for analyzing the relationship between three or more variables are referred to as:

Generally speaking,parametric methods are not conducive to analyzing qualitative variables.

When both of the variables under study are qualitative and between-subjects in nature,the appropriate method of data analysis is the:

For an experiment that includes four levels of the single independent variable with 4 levels and,4 different groups are compared,the most appropriate statistical test is the:

The observed distribution may bias one's decision about a parameter to focus on.

______ is the statistic used to indicate the strength of relationship between a criterion variable and several predictors in the context of a linear model

A non-parametric test should be pursued if there is reason to believe that the distributional assumptions of the corresponding parametric test have been violated to the extent that the parametric test is not robust.