Question 1

When might you use a one-tailed test, and when would you want to use a two-tailed test?

Accepted Answer

One-tailed tests are used to test directional hypotheses. Two-tailed tests are used to test nondirectional hypotheses.

Question 2

In order to help ensure generalizability, which of the following should be true about your sample?

Accepted Answer

A)  It is large 
B)  It is small 
C)  It is representative 
D)  It is nonrepresentative 
A)  It is large 
B)  It is small 
C)  It is representative 
D)  It is nonrepresentative C

Question 3

Which of the following represents a null hypothesis?

Accepted Answer

A)  $H _ { 1 } : \bar { X } _ { 1 } > \bar { X } _ { 2 }$ 
B)  $H _ { 0 } : \mu _ { 1 } = \mu _ { 2 }$ 
C)  $H _ { 1 : } : \bar { X } _ { 2 } \neq \bar { X } _ { 2 }$ 
D)  $H _ { 0 } : \mu _ { 1 } > \mu _ { 2 }$ 
A)  $H _ { 1 } : \bar { X } _ { 1 } > \bar { X } _ { 2 }$ 
B)  $H _ { 0 } : \mu _ { 1 } = \mu _ { 2 }$ 
C)  $H _ { 1 : } : \bar { X } _ { 2 } \neq \bar { X } _ { 2 }$ 
D)  $H _ { 0 } : \mu _ { 1 } > \mu _ { 2 }$ B

Question 4

The group from which you actually collect data for your study is known as the __________.

Accepted Answer

A)  sample 
B)  population 
C)  sampling error 
D)  general group 
A)  sample 
B)  population 
C)  sampling error 
D)  general group

Question 5

What is the sampling error? What does a high sampling error indicate?

Accepted Answer

Sampling error is a measure of how well

Question 6

Which of the following symbols would be used in a nondirectional hypothesis?

Accepted Answer

A)   
D)  $\neq$ 
A)   
D)  $\neq$

Question 7

What does your research question help to guide?

Accepted Answer

A)  Hypothesis 
B)  Relationship 
C)  Sampling error 
D)  Average score 
A)  Hypothesis 
B)  Relationship 
C)  Sampling error 
D)  Average score

Question 8

Which of the following symbols represents the null hypothesis?

Accepted Answer

A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$ 
A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$

Question 9

Which of the following refers to the group to which you wish to generalize your results?

Accepted Answer

A)  Sample 
B)  Population 
C)  Sampling error 
D)  General group 
A)  Sample 
B)  Population 
C)  Sampling error 
D)  General group

Question 10

What test would you want to use to test a nondirectional research hypothesis?

Accepted Answer

A)  One-tailed test 
B)  Two-tailed test 
C)  Nonparametric test 
D)  Frequency test 
A)  One-tailed test 
B)  Two-tailed test 
C)  Nonparametric test 
D)  Frequency test

Question 11

What does "generalizability" mean?

Accepted Answer

A)  Results may be applied to the populations studied 
B)  Results may apply only to the sample studied 
C)  Sampling error is high 
D)  Sample does not represent the population 
A)  Results may be applied to the populations studied 
B)  Results may apply only to the sample studied 
C)  Sampling error is high 
D)  Sample does not represent the population

Question 12

Which of the following symbols represents the average score of Group 1?

Accepted Answer

A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$ 
A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$

Question 13

What are the basic criteria for judging the quality of hypotheses?

Accepted Answer

A good hypothesis should be stated in de

Question 14

What does a hypothesis help you determine?

Accepted Answer

A)  Techniques to be used 
B)  Research question 
C)  Average score 
D)  Sampling error 
A)  Techniques to be used 
B)  Research question 
C)  Average score 
D)  Sampling error

Question 15

What does the null hypothesis always refer to? What does the research hypothesis always refer to?

Accepted Answer

The null hypothesis always ref

Question 16

What test would you want to use to test a directional research hypothesis?

Accepted Answer

A)  One-tailed test 
B)  Two-tailed test 
C)  Nonparametric test 
D)  Frequency test 
A)  One-tailed test 
B)  Two-tailed test 
C)  Nonparametric test 
D)  Frequency test

Question 17

What type of hypothesis posits a difference between groups, but the difference is not specified?

Accepted Answer

A)  Directional hypothesis 
B)  Nondirectional hypothesis 
C)  Research hypothesis 
D)  Null hypothesis 
A)  Directional hypothesis 
B)  Nondirectional hypothesis 
C)  Research hypothesis 
D)  Null hypothesis

Question 18

Which of the following symbols represents the first research hypothesis?

Accepted Answer

A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$ 
A)  $H _ { 1 }$ 
B)  $\mu 1$ 
C)  $\bar { X } 1$ 
D)  $H _ { 0 }$

Question 19

Using the symbols from the text, write a directional research hypothesis equation where 9th graders are hypothesized to score better 12th graders.

Accepted Answer

The answer of Using the symbols from the text, write...

Question 20

Explain what is meant by the fishing trip approach to doing research.

Accepted Answer

The fishing trip approach is where you t

When might you use a one-tailed test, and when would you want to use a two-tailed test?

In order to help ensure generalizability, which of the following should be true about your sample?

Which of the following represents a null hypothesis?

The group from which you actually collect data for your study is known as the __________.

What is the sampling error? What does a high sampling error indicate?

Which of the following symbols would be used in a nondirectional hypothesis?

What does your research question help to guide?

Which of the following symbols represents the null hypothesis?

Which of the following refers to the group to which you wish to generalize your results?

What test would you want to use to test a nondirectional research hypothesis?

What does "generalizability" mean?

Which of the following symbols represents the average score of Group 1?

What are the basic criteria for judging the quality of hypotheses?

What does a hypothesis help you determine?

What does the null hypothesis always refer to? What does the research hypothesis always refer to?

What test would you want to use to test a directional research hypothesis?

What type of hypothesis posits a difference between groups, but the difference is not specified?

Which of the following symbols represents the first research hypothesis?

Using the symbols from the text, write a directional research hypothesis equation where 9th graders are hypothesized to score better 12th graders.

Explain what is meant by the fishing trip approach to doing research.

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Are Your Curves Normal? Probability and Why It Counts

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

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Exam 7: Hypotheticals and You: Testing Your Questions

When might you use a one-tailed test, and when would you want to use a two-tailed test?

In order to help ensure generalizability, which of the following should be true about your sample?

Which of the following represents a null hypothesis?

The group from which you actually collect data for your study is known as the __________.

What is the sampling error? What does a high sampling error indicate?

Which of the following symbols would be used in a nondirectional hypothesis?

What does your research question help to guide?

Which of the following symbols represents the null hypothesis?

Which of the following refers to the group to which you wish to generalize your results?

What test would you want to use to test a nondirectional research hypothesis?

What does "generalizability" mean?

Which of the following symbols represents the average score of Group 1?

What are the basic criteria for judging the quality of hypotheses?

What does a hypothesis help you determine?

What does the null hypothesis always refer to? What does the research hypothesis always refer to?

What test would you want to use to test a directional research hypothesis?

What type of hypothesis posits a difference between groups, but the difference is not specified?

Which of the following symbols represents the first research hypothesis?

Using the symbols from the text, write a directional research hypothesis equation where 9th graders are hypothesized to score better 12th graders.

Explain what is meant by the fishing trip approach to doing research.

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Are Your Curves Normal? Probability and Why It Counts

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

Filters