Question 1

2) If scores on a psychological variable are normally distributed then:

Accepted Answer

A)  About 34% of people lie above one standard deviation 
B)  About 34% of people lie above two standard deviations 
C)  About 16% of people lie above one standard deviation 
D)  About 16% of people lie above two standard deviations 
A)  About 34% of people lie above one standard deviation 
B)  About 34% of people lie above two standard deviations 
C)  About 16% of people lie above one standard deviation 
D)  About 16% of people lie above two standard deviations C

Question 2

1) Deciles divide a data set up into

Accepted Answer

A)  Fifths 
B)  Tenths 
C)  Twentieths 
D)  Hundredths 
A)  Fifths 
B)  Tenths 
C)  Twentieths 
D)  Hundredths B

Question 3

7) A serious departure from normality occurs when:

Accepted Answer

A)  The skewness statistic is the same as its standard error 
B)  The skewness statistic is more than half its standard error 
C)  The skewness statistic is more than twice its standard error 
D)  The skewness statistic is less than its standard error 
A)  The skewness statistic is the same as its standard error 
B)  The skewness statistic is more than half its standard error 
C)  The skewness statistic is more than twice its standard error 
D)  The skewness statistic is less than its standard error C

Question 4

9) The 95% confidence limits where, for 50 people, we have a mean of 40 and a standard deviation of 8 are:

Accepted Answer

A)  32 and 48 
B)  37.74 and 42.26 
C)  37.43 and 42.57 
D)  38.87 and 41.13 
A)  32 and 48 
B)  37.74 and 42.26 
C)  37.43 and 42.57 
D)  38.87 and 41.13

Question 5

8) If an anxiety scale has a mean of 50 and a standard deviation of 6 then a person with a score of 65 has a z score of:

Accepted Answer

A)  1.5 
B)  2.5 
C)  2 
D)  15 
A)  1.5 
B)  2.5 
C)  2 
D)  15

Question 6

4) A student's grade is 65 where the mean is 55 and standard deviation is 10. The proportion of the student population who would score higher than 65 is about:

Accepted Answer

A)  34% 
B)  68% 
C)  16% 
D)  2.5% 
A)  34% 
B)  68% 
C)  16% 
D)  2.5%

Question 7

10) If a person has a percentile score of 36.69 what would be their z score?

Accepted Answer

A)  .34 
B)  - .34 
C)  1.11 
D)  -1.11 
A)  .34 
B)  - .34 
C)  1.11 
D)  -1.11

Question 8

3) If scores on a psychological variable have a mean of 40 and a standard deviation of 6 then:

Accepted Answer

A)  About 16% of people score no higher than 34 
B)  About 16% of people score above 42 
C)  About 16% of people score between 40 and 46 
D)  About 16% of people score between 34 and 40 
A)  About 16% of people score no higher than 34 
B)  About 16% of people score above 42 
C)  About 16% of people score between 40 and 46 
D)  About 16% of people score between 34 and 40

Question 9

6) In a negatively skewed distribution:

Accepted Answer

A)  There are more scores above the mean than below it 
B)  There are more scores below the mean than above it 
C)  The mean is to the right of the median 
D)  The median is to the right of the mode 
A)  There are more scores above the mean than below it 
B)  There are more scores below the mean than above it 
C)  The mean is to the right of the median 
D)  The median is to the right of the mode

Question 10

5) If an IQ test has a mean of 100 and a standard deviation of 15, use z tables to find what percentage of people would score between the mean and 120:

Accepted Answer

A)  27.34% 
B)  40% 
C)  40.82% 
D)  41% 
A)  27.34% 
B)  40% 
C)  40.82% 
D)  41%

2) If scores on a psychological variable are normally distributed then:

1) Deciles divide a data set up into

7) A serious departure from normality occurs when:

9) The 95% confidence limits where, for 50 people, we have a mean of 40 and a standard deviation of 8 are:

8) If an anxiety scale has a mean of 50 and a standard deviation of 6 then a person with a score of 65 has a z score of:

4) A student's grade is 65 where the mean is 55 and standard deviation is 10. The proportion of the student population who would score higher than 65 is about:

10) If a person has a percentile score of 36.69 what would be their z score?

3) If scores on a psychological variable have a mean of 40 and a standard deviation of 6 then:

6) In a negatively skewed distribution:

5) If an IQ test has a mean of 100 and a standard deviation of 15, use z tables to find what percentage of people would score between the mean and 120:

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

Significance Testing Was It a Real Effect

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

Exam 15: Frequencies and Distributions

2) If scores on a psychological variable are normally distributed then:

1) Deciles divide a data set up into

7) A serious departure from normality occurs when:

9) The 95% confidence limits where, for 50 people, we have a mean of 40 and a standard deviation of 8 are:

8) If an anxiety scale has a mean of 50 and a standard deviation of 6 then a person with a score of 65 has a z score of:

4) A student's grade is 65 where the mean is 55 and standard deviation is 10. The proportion of the student population who would score higher than 65 is about:

10) If a person has a percentile score of 36.69 what would be their z score?

3) If scores on a psychological variable have a mean of 40 and a standard deviation of 6 then:

6) In a negatively skewed distribution:

5) If an IQ test has a mean of 100 and a standard deviation of 15, use z tables to find what percentage of people would score between the mean and 120:

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

Significance Testing Was It a Real Effect

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