Question 1

Which is the correct formula for the z score?

Accepted Answer

A) ΣX/N 
B) (X - M)/SD 
C) ΣZx/Zy/N 
D) A2 + B2 = C2 
A) ΣX/N 
B) (X - M)/SD 
C) ΣZx/Zy/N 
D) A2 + B2 = C2 B

Question 2

The range of the correlation coefficient is from ___________.

Accepted Answer

A) -1.0 to +1.0 
B) -3 standard deviation units to +3 standard deviation units 
C) 0 to +1 
D) 34.13 percent to 68.26 percent 
A) -1.0 to +1.0 
B) -3 standard deviation units to +3 standard deviation units 
C) 0 to +1 
D) 34.13 percent to 68.26 percent A

Question 3

Moshe decides to survey the heights of the men in his high school class.He measures every single male student in his school.He then plots a frequency distribution.The curve that he plots will probably be described as a _________.

Accepted Answer

A) bell curve 
B) abnormal curve 
C) skewed distribution 
D) scattergram 
A) bell curve 
B) abnormal curve 
C) skewed distribution 
D) scattergram A

Question 4

One problem with collecting data from samples is that ________.

Accepted Answer

A) in almost any body of data there are correlational areas 
B) in almost any body of data there are sampling errors 
C) data collected from samples cannot guarantee that you have calculated a parameter 
D) you cannot determine the probability that the differences found are due to chance 
A) in almost any body of data there are correlational areas 
B) in almost any body of data there are sampling errors 
C) data collected from samples cannot guarantee that you have calculated a parameter 
D) you cannot determine the probability that the differences found are due to chance

Question 5

Which measure is calculated from a population?

Accepted Answer

A) parameter 
B) statistics 
C) frequency polygon 
D) t-test 
A) parameter 
B) statistics 
C) frequency polygon 
D) t-test

Question 6

Which statement is true if there is a large variability in the data set?

Accepted Answer

A) The standard deviation will be small. 
B) The data will be positively skewed. 
C) The mean,mode,and median will not be the same. 
D) The standard deviation will be large. 
A) The standard deviation will be small. 
B) The data will be positively skewed. 
C) The mean,mode,and median will not be the same. 
D) The standard deviation will be large.

Question 7

With a skewed distribution,the best measure of central tendency is the __________.

Accepted Answer

A) mean 
B) median 
C) mode 
D) mood 
A) mean 
B) median 
C) mode 
D) mood

Question 8

Zola has designed a personality test.After giving it to a large sample,it looks like the test produced a normally shaped frequency distribution.The test had a mean of 50 and standard deviation of 10.Zola wants to find the two scores of this normal distribution that would cut off the central 68.26 percent of the scores.The lower score would be __________ and the higher score would be ____________.

Accepted Answer

A) .85;115 
B) 40;60 
C) 45;55 
D) One cannot determine the scores from the information given. 
A) .85;115 
B) 40;60 
C) 45;55 
D) One cannot determine the scores from the information given.

Question 9

A correlation coefficient of -.74 indicates a stronger relationship than a correlation coefficient of +.50.

Accepted Answer

A) True 
 B)False

Question 10

Maricella decides to survey the heights of BOTH men and women college basketball players in championship teams.He makes a frequency polygon of the data.It is most likely that the graph looks like a _____________.

Accepted Answer

A) normal distribution 
B) bimodal distribution 
C) negatively skewed distribution 
D) positively skewed distribution 
A) normal distribution 
B) bimodal distribution 
C) negatively skewed distribution 
D) positively skewed distribution

Question 11

The most usual kind of frequency distribution is the _________.

Accepted Answer

A) normal curve 
B) skewed curve 
C) bimodal curve 
D) binomial distribution 
A) normal curve 
B) skewed curve 
C) bimodal curve 
D) binomial distribution

Question 12

Given the following numbers,calculate the mean: 1,3,5,and 7.

Accepted Answer

A) 1 
B) 3 
C) 4 
D) 5 
A) 1 
B) 3 
C) 4 
D) 5

Question 13

Descriptive statistics are used to ______________.

Accepted Answer

A) summarize data from a sample 
B) decide if two sample groups are different from each other 
C) decide if two variables are related to each other 
D) determine if an experimental design has high reliability 
A) summarize data from a sample 
B) decide if two sample groups are different from each other 
C) decide if two variables are related to each other 
D) determine if an experimental design has high reliability

Question 14

To determine if the means of three or more groups are significantly different,one would use _____________.

Accepted Answer

A) the t-test 
B) the F-test 
C) chi-square 
D) chee-square 
A) the t-test 
B) the F-test 
C) chi-square 
D) chee-square

Question 15

Which type of frequency distribution graph uses bars to present the frequency data?

Accepted Answer

A) polygon 
B) normal curve 
C) histogram 
D) skewed distribution 
A) polygon 
B) normal curve 
C) histogram 
D) skewed distribution

Question 16

Descriptive statistics allow you to make decisions and reach conclusions about your data.

Accepted Answer

A) True 
 B)False

Question 17

When a researcher computes the t statistic based on two means and looks it up in a table of possible t values,the p value in the table helps the researcher determine __________.

Accepted Answer

A) whether the experimental design was valid 
B) whether the experiment was confounded 
C) the probability that the results were due to chance 
D) whether the two variables are related to each other 
A) whether the experimental design was valid 
B) whether the experiment was confounded 
C) the probability that the results were due to chance 
D) whether the two variables are related to each other

Question 18

To determine if frequencies or proportions differ between groups,one would use ____________.

Accepted Answer

A) the t-test 
B) the analysis of variance 
C) chi-square 
D) chee-square 
A) the t-test 
B) the analysis of variance 
C) chi-square 
D) chee-square

Question 19

Joaquim decides to survey the salaries of college basketball players in championship teams.He makes a frequency polygon of the data.It is most likely that the graph looks like a _____________.

Accepted Answer

A) normal distribution 
B) bimodal distribution 
C) negatively skewed distribution 
D) positively skewed distribution 
A) normal distribution 
B) bimodal distribution 
C) negatively skewed distribution 
D) positively skewed distribution

Question 20

A (an)___________means a difference thought not to be due to chance.

Accepted Answer

A) parametric difference 
B) experimental difference 
C) probabilistic difference 
D) significant difference Correct: A real difference means that the difference is not due to sampling error. 
A) parametric difference 
B) experimental difference 
C) probabilistic difference 
D) significant difference Correct: A real difference means that the difference is not due to sampling error.

Exam 1: Appendix A: Statistics in Psychology

Which is the correct formula for the z score?

The range of the correlation coefficient is from ___________.

Moshe decides to survey the heights of the men in his high school class.He measures every single male student in his school.He then plots a frequency distribution.The curve that he plots will probably be described as a _________.

One problem with collecting data from samples is that ________.

Which measure is calculated from a population?

Which statement is true if there is a large variability in the data set?

With a skewed distribution,the best measure of central tendency is the __________.

A correlation coefficient of -.74 indicates a stronger relationship than a correlation coefficient of +.50.

Maricella decides to survey the heights of BOTH men and women college basketball players in championship teams.He makes a frequency polygon of the data.It is most likely that the graph looks like a _____________.

The most usual kind of frequency distribution is the _________.

Given the following numbers,calculate the mean: 1,3,5,and 7.

Descriptive statistics are used to ______________.

To determine if the means of three or more groups are significantly different,one would use _____________.

Which type of frequency distribution graph uses bars to present the frequency data?

Descriptive statistics allow you to make decisions and reach conclusions about your data.

When a researcher computes the t statistic based on two means and looks it up in a table of possible t values,the p value in the table helps the researcher determine __________.

To determine if frequencies or proportions differ between groups,one would use ____________.

Joaquim decides to survey the salaries of college basketball players in championship teams.He makes a frequency polygon of the data.It is most likely that the graph looks like a _____________.

A (an)___________means a difference thought not to be due to chance.

A: The Science of Psychology

B: The Science of Psychology

C: The Science of Psychology

A: The Biological Perspective

B: The Biological Perspective

C: The Biological Perspective

Appendix B: Applied Psychology and Psychology Careers

A: Sensation and Perception

B: Sensation and Perception

C: Sensation and Perception

A: Learning

B: Learning

C: Learning

A: Memory

B: Memory

C: Memory

Appendix: Secrets for Surviving College: How to Improve Your Grades

A: Consciousness and Cognition

B: Consciousness and Cognition

C: Consciousness and Cognition

Development Across the Lifespan

A: Development Across the Lifespan

B: Development Across the Lifespan

C: Development Across the Lifespan

Motivation and Emotion

A: Motivation and Emotion

B: Motivation and Emotion

C: Motivation and Emotion

Stress and Health

A: Stress and Health

B: Stress and Health

C: Stress and Health

Social Psychology

A Social Psychology

B: Social Psychology

C: Social Psychology

Theories of Personality and Intelligence

A: Theories of Personality and Intelligence

B: Theories of Personality and Intelligence

C: Theories of Personality and Intelligence

Psychological Disorders

A: Psychological Disorders

B: Psychological Disorders

C: Psychological Disorders

Psychological Therapies

A: Psychological Therapies

B: Psychological Therapies

C: Psychological Therapies

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