Question 1

1) Usually a researcher would prefer a result significant with:

Accepted Answer

A)  p < .01 
B)  p < .1 
C)  p < .05 
D)  p < .5 
A)  p < .01 
B)  p < .1 
C)  p < .05 
D)  p < .5 A

Question 2

10) A researcher wishes to find out whether there is a significant difference between a group of South American students and a group of African students in liking for the course they have just finished. All students will leave the country permanently just after the survey is completed. An appropriate level of significance to achieve would be:

Accepted Answer

A)  p < .01 
B)  p < .1 
C)  p < .05 
D)  p < .5 
A)  p < .01 
B)  p < .1 
C)  p < .05 
D)  p < .5 A

Question 3

In a study which compares reaction times between two groups, one which has been asked to run a treadmill for 15 minutes and one not using the treadmill,
-8) In the above reaction time study, a difference between two groups in favour of the treadmill condition where p is less than .05 would indicate:

Accepted Answer

A)  Proof that running a treadmill reduces reaction times 
B)  Support for the null hypothesis 
C)  Support for the proposal that running a treadmill reduces reaction times 
D)  That the alternative hypothesis should be rejected 
A)  Proof that running a treadmill reduces reaction times 
B)  Support for the null hypothesis 
C)  Support for the proposal that running a treadmill reduces reaction times 
D)  That the alternative hypothesis should be rejected C

Question 4

9) Suppose a friend said they could influence the fall of a coin and then proceeded to guess correctly on four consecutive tosses. We cannot accept this as a significant outcome because:

Accepted Answer

A)  The result of each toss is independent of the last result 
B)  They did not formulate a null hypothesis 
C)  The probability of four consecutive correct calls is greater than .05 
D)  The coin could be biased 
A)  The result of each toss is independent of the last result 
B)  They did not formulate a null hypothesis 
C)  The probability of four consecutive correct calls is greater than .05 
D)  The coin could be biased

Question 5

4) In a normal distribution a z score of 2.55 would be:

Accepted Answer

A)  Significant with p < .05 two-tailed 
B)  Significant with p < .01 two-tailed 
C)  Significant with p < .001 one-tailed 
D)  Significant with p < .005 one-tailed 
A)  Significant with p < .05 two-tailed 
B)  Significant with p < .01 two-tailed 
C)  Significant with p < .001 one-tailed 
D)  Significant with p < .005 one-tailed

Question 6

In a study which compares reaction times between two groups, one which has been asked to run a treadmill for 15 minutes and one not using the treadmill,
-7) effect size is:

Accepted Answer

A)  The size of the difference between the means of the two groups 
B)  The estimated size of the difference between means of the populations from which the groups are drawn 
C)  The estimated size of the difference between standard deviations of the populations from which the two groups are drawn 
D)  The actual size of the mean of the faster group 
A)  The size of the difference between the means of the two groups 
B)  The estimated size of the difference between means of the populations from which the groups are drawn 
C)  The estimated size of the difference between standard deviations of the populations from which the two groups are drawn 
D)  The actual size of the mean of the faster group

Question 7

3) Which of the following is correct?

Accepted Answer

A)  In a one-tailed test the direction of the difference between groups is predicted 
B)  In a one-tailed test the direction of the difference between groups is not predicted 
C)  In a one-tailed test the alternative hypothesis does not state the predicted direction of difference between groups 
D)  In a one-tailed test the null hypothesis predicts that there will be no difference between groups 
A)  In a one-tailed test the direction of the difference between groups is predicted 
B)  In a one-tailed test the direction of the difference between groups is not predicted 
C)  In a one-tailed test the alternative hypothesis does not state the predicted direction of difference between groups 
D)  In a one-tailed test the null hypothesis predicts that there will be no difference between groups

Question 8

2) Which of these is a null hypothesis:

Accepted Answer

A)  There will be no difference between males and females in number of problems solved 
B)  There will be a difference between males and females in number of problems solved 
C)  There is no difference between males and females in number of problems solved 
D)  There is a difference between males and females in number of problems solved 
A)  There will be no difference between males and females in number of problems solved 
B)  There will be a difference between males and females in number of problems solved 
C)  There is no difference between males and females in number of problems solved 
D)  There is a difference between males and females in number of problems solved

Question 9

5) "Girls will have higher math scores than boys" is a:

Accepted Answer

A)  Non- directional hypothesis 
B)  Directional hypothesis 
C)  Non- directional prediction 
D)  Directional prediction 
A)  Non- directional hypothesis 
B)  Directional hypothesis 
C)  Non- directional prediction 
D)  Directional prediction

Question 10

6) A researcher using a 1% rather than a 5% level of significance is:

Accepted Answer

A)  More likely to make a Type I error 
B)  More likely to make a Type II error 
C)  Less likely to make a Type II error 
D)  More likely to make both a Type I and Type II error 
A)  More likely to make a Type I error 
B)  More likely to make a Type II error 
C)  Less likely to make a Type II error 
D)  More likely to make both a Type I and Type II error

1) Usually a researcher would prefer a result significant with:

In a study which compares reaction times between two groups, one which has been asked to run a treadmill for 15 minutes and one not using the treadmill, -8) In the above reaction time study, a difference between two groups in favour of the treadmill condition where p is less than .05 would indicate:

9) Suppose a friend said they could influence the fall of a coin and then proceeded to guess correctly on four consecutive tosses. We cannot accept this as a significant outcome because:

4) In a normal distribution a z score of 2.55 would be:

In a study which compares reaction times between two groups, one which has been asked to run a treadmill for 15 minutes and one not using the treadmill, -7) effect size is:

3) Which of the following is correct?

2) Which of these is a null hypothesis:

5) "Girls will have higher math scores than boys" is a:

6) A researcher using a 1% rather than a 5% level of significance is:

Psychology, Science and Research

Measuring People Variables, Samples and the Qualitative Critique

Experiments and Experimental Designs in Psychology

Validity in Psychological Research

Quasi-Experiments and Non-Experiments

Observational Methods Watching and Being With People

Interview Methods Asking People Direct Questions

Psychological Tests and Measurement Scales

Comparison Studies Cross-Sectional, Longitudinal and Cross-Cultural Studies

Qualitative Approaches in Psychology

Ethical Issues in Psychological Research

Analysing Qualitative Data

Statistics Organising the Data

Graphical Representation of Data

Frequencies and Distributions

Testing for Differences Between Two Samples

Tests for Categorical Variables and Frequency Tables

Correlation

Regression and Multiple Regression

Multi-Level Analysis Differences Between More Than Two Conditions Anova

Multi-Factorial Anova Designs

Anova for Repeated Measures Designs

Choosing a Significance Test for Your Data

Planning Your Practical and Writing up Your Report

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Exam 16: Significance Testing Was It a Real Effect

1) Usually a researcher would prefer a result significant with:

9) Suppose a friend said they could influence the fall of a coin and then proceeded to guess correctly on four consecutive tosses. We cannot accept this as a significant outcome because:

4) In a normal distribution a z score of 2.55 would be:

In a study which compares reaction times between two groups, one which has been asked to run a treadmill for 15 minutes and one not using the treadmill, -7) effect size is:

3) Which of the following is correct?

2) Which of these is a null hypothesis:

5) "Girls will have higher math scores than boys" is a:

6) A researcher using a 1% rather than a 5% level of significance is:

Psychology, Science and Research

Measuring People Variables, Samples and the Qualitative Critique

Experiments and Experimental Designs in Psychology

Validity in Psychological Research

Quasi-Experiments and Non-Experiments

Observational Methods Watching and Being With People

Interview Methods Asking People Direct Questions

Psychological Tests and Measurement Scales

Comparison Studies Cross-Sectional, Longitudinal and Cross-Cultural Studies

Qualitative Approaches in Psychology

Ethical Issues in Psychological Research

Analysing Qualitative Data

Statistics Organising the Data

Graphical Representation of Data

Frequencies and Distributions

Testing for Differences Between Two Samples

Tests for Categorical Variables and Frequency Tables

Correlation

Regression and Multiple Regression

Multi-Level Analysis Differences Between More Than Two Conditions Anova

Multi-Factorial Anova Designs

Anova for Repeated Measures Designs

Choosing a Significance Test for Your Data

Planning Your Practical and Writing up Your Report

Filters