Question 1

What is matching?

Accepted Answer

In matching,an individual in o

Question 2

In order to select the correct statistical test you need to know if the experimental design is_____.

Accepted Answer

A) Between or within subjects design 
B) scale of measurement of the dependent variable 
C) the number or levels of the independent variable 
D) All of these 
E) Both a & b 
A) Between or within subjects design 
B) scale of measurement of the dependent variable 
C) the number or levels of the independent variable 
D) All of these 
E) Both a & b

Question 3

An investigator was interested in determining if the size of a coin influenced judgments of numerosity when people were asked to make judgments of how many coins were in a pile of coins.Fifteen subjects were asked to estimate the number of pennies in a display of 43 coins.In another condition,15 different subjects estimated the number of dimes for the same display.The value of the coin would be classified as a ____ variable.

Accepted Answer

A) between-subjects 
B) within-subjects 
C) confounded 
D) disturbance 
A) between-subjects 
B) within-subjects 
C) confounded 
D) disturbance

Question 4

Random assignment of subjects to experimental conditions is only feasible when an investigator is using ____.

Accepted Answer

A) an experimental strategy 
B) an observational research strategy 
C) both of these 
A) an experimental strategy 
B) an observational research strategy 
C) both of these

Question 5

When an investigator is confident that no carry-over effects will occur,which of the following designs is generally superior?

Accepted Answer

A) matched-subjects 
B) between-subjects 
C) observational 
D) within-subjects 
A) matched-subjects 
B) between-subjects 
C) observational 
D) within-subjects

Question 6

A _____ variable is one that is unrelated to the independent variable but that affects the dependent variable.

Accepted Answer

A) disturbance 
B) confounding 
C) suppressor 
D) control 
A) disturbance 
B) confounding 
C) suppressor 
D) control

Question 7

Which of the following can influence a test of robustness?

Accepted Answer

A) sample size 
B) degree of violation 
C) form of violation 
D) all of these 
A) sample size 
B) degree of violation 
C) form of violation 
D) all of these

Question 8

A cross-sectional study uses is considered a_____.

Accepted Answer

A) Between subjects design 
B) Within-subjects design 
C) quasi-experimental 
D) Both a & c 
A) Between subjects design 
B) Within-subjects design 
C) quasi-experimental 
D) Both a & c

Question 9

In matching,an individual in one group is "matched" with an individual in each of the other groups such that all of these individuals have the same value on the _____ variable.

Accepted Answer

A) confounding 
B) disturbance 
C) independent 
D) dependent 
A) confounding 
B) disturbance 
C) independent 
D) dependent

Question 10

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

Accepted Answer

A) between-subjects design. 
B) within-subjects design. 
A) between-subjects design. 
B) within-subjects design.

Question 11

If a confounding variable has been included in the design of an experiment,then interpretation of the results would be ___.

Accepted Answer

A) correct for the independent variable but not for the confounding variable 
B) ambiguous 
C) partially correct 
D) unaffected by the confounding variable 
A) correct for the independent variable but not for the confounding variable 
B) ambiguous 
C) partially correct 
D) unaffected by the confounding variable

Question 12

The ____________________variable is measured by the researcher.

Accepted Answer

The answer of The ____________________variable is measured by the researcher....

Question 13

It is entirely possible for two variables to be related to one another,but for no causal relationship to exist between them.

Accepted Answer

A) True 
 B)False

Question 14

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó2)will be smaller.

Accepted Answer

A) True 
 B)False

Question 15

Nonparametric statistics require quantitative dependent variables and are usually applied when these variables are measured on a level that at least approximates interval characteristics.

Accepted Answer

A) True 
 B)False

Question 16

The ability to make a causal inference between two variables is a function of the statistical technique used to analyze the data that are yielded by the research design.

Accepted Answer

A) True 
 B)False

Question 17

Dr.Len wants to determine whether or not dextrin causes people to lose weight.He gives 10 subjects dextrin and 10 subjects a placebo.He measures their weight every day (since weight seems to fluctuate daily)until the experiment is discontinued (after 4 weeks).What type of design is Dr.Len implementing?

Accepted Answer

A) Between Subjects Design 
B) Within Subjects Design 
C) Match subject Design 
D) Experimental bias 
E) None of these 
A) Between Subjects Design 
B) Within Subjects Design 
C) Match subject Design 
D) Experimental bias 
E) None of these

Question 18

In a truly random sample from the population

Accepted Answer

A) all subjects are matched on important characteristics 
B) all members of the population have an equal chance of being selected 
C) gender distribution should be 50% male 50% female 
D) All of these 
E) None of these 
A) all subjects are matched on important characteristics 
B) all members of the population have an equal chance of being selected 
C) gender distribution should be 50% male 50% female 
D) All of these 
E) None of these

Question 19

The ability to make a causal inference between two variables is a function of one's _____,not the _____ used to analyze the data.

Accepted Answer

A) research design;statistical technique 
B) statistical technique;research design 
C) statistical technique;experiment 
D) observations;variables 
A) research design;statistical technique 
B) statistical technique;research design 
C) statistical technique;experiment 
D) observations;variables

Question 20

What three assumptions are important or essential to parametric test?

Accepted Answer

Homogeneity of variance,depend

What is matching?

In order to select the correct statistical test you need to know if the experimental design is_____.

Random assignment of subjects to experimental conditions is only feasible when an investigator is using ____.

When an investigator is confident that no carry-over effects will occur,which of the following designs is generally superior?

A _____ variable is one that is unrelated to the independent variable but that affects the dependent variable.

Which of the following can influence a test of robustness?

A cross-sectional study uses is considered a_____.

In matching,an individual in one group is "matched" with an individual in each of the other groups such that all of these individuals have the same value on the _____ variable.

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

If a confounding variable has been included in the design of an experiment,then interpretation of the results would be ___.

The ____________________variable is measured by the researcher.

It is entirely possible for two variables to be related to one another,but for no causal relationship to exist between them.

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó²)will be smaller.

Nonparametric statistics require quantitative dependent variables and are usually applied when these variables are measured on a level that at least approximates interval characteristics.

The ability to make a causal inference between two variables is a function of the statistical technique used to analyze the data that are yielded by the research design.

In a truly random sample from the population

The ability to make a causal inference between two variables is a function of one's _,not the _ used to analyze the data.

What three assumptions are important or essential to parametric test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

What is matching?

In order to select the correct statistical test you need to know if the experimental design is_____.

Random assignment of subjects to experimental conditions is only feasible when an investigator is using ____.

When an investigator is confident that no carry-over effects will occur,which of the following designs is generally superior?

A _____ variable is one that is unrelated to the independent variable but that affects the dependent variable.

Which of the following can influence a test of robustness?

A cross-sectional study uses is considered a_____.

In matching,an individual in one group is "matched" with an individual in each of the other groups such that all of these individuals have the same value on the _____ variable.

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

If a confounding variable has been included in the design of an experiment,then interpretation of the results would be ___.

The ____________________variable is measured by the researcher.

It is entirely possible for two variables to be related to one another,but for no causal relationship to exist between them.

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó2)will be smaller.

Nonparametric statistics require quantitative dependent variables and are usually applied when these variables are measured on a level that at least approximates interval characteristics.

The ability to make a causal inference between two variables is a function of the statistical technique used to analyze the data that are yielded by the research design.

In a truly random sample from the population

The ability to make a causal inference between two variables is a function of one's _____,not the _____ used to analyze the data.

What three assumptions are important or essential to parametric test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó²)will be smaller.

The ability to make a causal inference between two variables is a function of one's _,not the _ used to analyze the data.