Question 1

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

Accepted Answer

This is true, and is referred to as a mixed design. The between-subjects variable refers to a factor that differs between groups, while the within-subjects variable refers to a factor that changes within individuals over time or across conditions.

Question 2

Statistical techniques that analyze the relationship between three or more variables are referred to as multivariate statistics.

Accepted Answer

The answer of Statistical techniques that analyze the relationship between...

Question 3

The goal of factor analysis is to determine if the correlations among a set of variables can be accounted for by one or more underlying dimensions,or factors.

Accepted Answer

The statement is true. Factor analysis aims to uncover the underlying structure or dimensions that explain the observed correlations among a set of variables.

Question 4

A researcher reported gave subjects 3 different doses of caffeine 0mg,50mg,100 mg and 150mg.She had a total of 90 subjects,30 in each group.After ingesting caffeine a recall test was used to assess their short-term memory.The researcher should use ____________________ to analyze the data.

Accepted Answer

The answer of A researcher reported gave subjects 3 different...

Question 5

Very few research problems require that more than two variables be simultaneously studied.

Accepted Answer

There are many research problems that require studying more than two variables simultaneously, especially when dealing with complex systems or phenomena. Such studies may involve multivariate analysis techniques to examine the relationships and interactions among multiple variables.

Question 6

When both independent variables are within-subjects in nature,the data can be analyzed using a two-way repeated measures analysis of variance.

Accepted Answer

A two-way repeated measures ANOVA is appropriate when there are two independent variables and at least one of them is a within-subjects variable.

Question 7

Multiple regression involves the prediction of a criterion from two or more predictors.

Accepted Answer

Multiple regression involves the use of two or more predictors to predict a single criterion variable.

Question 8

One example of a multivariate statistic is two-way between-subjects analysis of variance.

Accepted Answer

Two-way between-subjects analysis of variance is a multivariate statistical analysis used to examine the effects of two independent variables (factors) on one dependent variable.

Question 9

The American Heart Association (AHA)found that vitamin A enhances visual acuity.They had a total of 10,000 subjects half who received a vitamin A supplement and the other half received a placebo and visual acuity was measured 3 months after the treatment was given.The AHA should use the ____________________ to analyze the data.

Accepted Answer

The answer of The American Heart Association (AHA)found that vitamin...

Question 10

In situations involving the analysis of two or more dependent variables in a factorial design,analysts will often perform a multivariate analysis of variance.

Accepted Answer

A multivariate analysis of variance (MANOVA) is commonly used in factorial designs with two or more dependent variables, as it allows for the examination of the effects of independent variables on multiple dependent variables simultaneously.

Question 11

The inference of the relationship after using an Independent groups t-test is____________________.

Accepted Answer

The answer of The inference of the relationship after using...

Question 12

The use of IPod's may induce hearing loss according to research conducted at Washington State University.They had a total of 500 subjects that were given IPods set a decibel (db)rate of either 0 (no sound),40db or 70db.After listening to the same music on the IPod's for 1 week each subject was given a hearing test.Researchers should use ____________________ to analyze the data.

Accepted Answer

The answer of The use of IPod's may induce hearing...

Question 13

Dr.Jones found that there is a relationship between day time drowsiness and what time you wake up in the morning r(50)= .60,p<0.01.This relationship has a ____________________ correlation.

Accepted Answer

The answer of Dr.Jones found that there is a relationship...

Question 14

Multivariate analysis of variance tests whether the groups have different population means on each of the dependent variables considered separately.

Accepted Answer

Multivariate analysis of variance (MANOVA) tests whether the groups have different population means on a combination of dependent variables, not each separately.

Question 15

Although the joint influence of two between-subjects independent variables on a dependent variable can be studied using two-way between-subjects analysis of variance,it is not possible to study the joint influence of two within-subjects independent variables.

Accepted Answer

It is possible to study the joint influence of two within-subjects independent variables using a two-way repeated measures analysis of variance.

Question 16

A researcher has found that his distribution is not normal but bimodal.He had planned to use a Independent groups t-test to analyze his data.His alternative statistical test should be____________________.

Accepted Answer

The answer of A researcher has found that his distribution...

Question 17

A researcher is studying effect of gender on what type of car he or she buys.The researcher should use the ____________________ to analyze the data.

Accepted Answer

The answer of A researcher is studying effect of gender...

Question 18

Analysis of variance is rarely used in the behavioral sciences.

Accepted Answer

Analysis of variance (ANOVA) is a commonly used statistical tool in the behavioral sciences. It is often used to compare means between more than two groups, and to understand the relationships between independent and dependent variables. ANOVA is particularly useful for experimental designs where researchers are interested in exploring the effects of different treatment conditions on a given outcome variable.

Question 19

Dr.Jones found that there is a relationship between day time drowsiness and what time you wake up in the morning r(50)= .60,p<0.01.He calculates the strength of the relationship as ____________________.

Accepted Answer