Question 1

The more time students spend studying,the higher their grades are.This would be a

Accepted Answer

A) zero correlation. 
B) positive relationship. 
C) variable relationship. 
D) negative relationship. 
A) zero correlation. 
B) positive relationship. 
C) variable relationship. 
D) negative relationship.

Question 2

For a group of students,a researcher obtains their grades in high school and their grades in college and plot the intersection of these paired measures for each person on a graph as a single point.This graph is called a

Accepted Answer

A) normal curve. 
B) correlation matrix. 
C) frequency distribution. 
D) scatter diagram. 
A) normal curve. 
B) correlation matrix. 
C) frequency distribution. 
D) scatter diagram.

Question 3

For the numbers 10,19,2,9,and 15,the range is

Accepted Answer

A) 10. 
B) 11. 
C) 15. 
D) 17. 
A) 10. 
B) 11. 
C) 15. 
D) 17.

Question 4

If you square the correlation coefficient,you will get a number telling the

Accepted Answer

A) percent of variance accounted for by the correlation. 
B) standard deviations accounted for by the correlation. 
C) statistical significance of the measure. 
D) amount of causation between the two variables. 
A) percent of variance accounted for by the correlation. 
B) standard deviations accounted for by the correlation. 
C) statistical significance of the measure. 
D) amount of causation between the two variables.

Question 5

The number of standard deviation units a score falls above or below the mean defines its

Accepted Answer

A) median. 
B) correlation coefficient. 
C) z-score. 
D) average. 
A) median. 
B) correlation coefficient. 
C) z-score. 
D) average.

Question 6

On his psychology test,Miguel must determine what percent of all cases are found between a standard deviation (SD)of +3 and a standard deviation (SD)of -3 on a normal curve.His answer to this problem should be __________ percent.

Accepted Answer

A) 50 
B) 68 
C) 95 
D) 99 
A) 50 
B) 68 
C) 95 
D) 99

Question 7

A psychologist notes that the higher a couple's socioeconomic and educational status,the smaller the number of children they are likely to have.This psychologist is describing a relationship called a

Accepted Answer

A) statistical significance. 
B) standard deviation. 
C) correlation. 
D) normal curve. 
A) statistical significance. 
B) standard deviation. 
C) correlation. 
D) normal curve.

Question 8

The absence of a mathematical relationship between two measures is referred to as a

Accepted Answer

A) zero correlation. 
B) null hypothesis. 
C) variable relationship. 
D) negative correlation. 
A) zero correlation. 
B) null hypothesis. 
C) variable relationship. 
D) negative correlation.

Question 9

Zack had a score of 90 in a class with a mean of 80 and a standard deviation of 10.His z-score is

Accepted Answer

A) +2.0. 
B) +1.0. 
C) -1.0. 
D) -2.0. 
A) +2.0. 
B) +1.0. 
C) -1.0. 
D) -2.0.

Question 10

You handle the payroll at a small company whose president boasts that the average salary at his company is
$54,000.What is the statistical reason for this distorted view of the company's average pay? Then,using the salaries listed below for everyone that works at this company determine the mean,median,mode,and range of salaries for this small company.
Salaries: $200,000 (president's salary);$100,000 (vice­president's salary)
Other eight employees earn $30,000 each.

Accepted Answer

Answer will include that although $54,00

Question 11

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?

Accepted Answer

A) scatter diagram 
B) histogram 
C) frequency polygon 
D) normal curve 
A) scatter diagram 
B) histogram 
C) frequency polygon 
D) normal curve

Question 12

If the mean on a test is 90 and the standard deviation is 10,a person with a z-score of -1.0 scored which of the following on the test?

Accepted Answer

A) 70 
B) 80 
C) 90 
D) 110 
A) 70 
B) 80 
C) 90 
D) 110

Question 13

If the correlation between anxiety and test scores is -.85,then we can safely conclude that

Accepted Answer

A) high anxiety causes low test performance. 
B) low test performance causes high anxiety levels. 
C) there is a positive relationship between anxiety and test scores. 
D) there is a negative relationship between anxiety and test scores. 
A) high anxiety causes low test performance. 
B) low test performance causes high anxiety levels. 
C) there is a positive relationship between anxiety and test scores. 
D) there is a negative relationship between anxiety and test scores.

Question 14

Jonas is trying to determine the median for an even number of scores.The median will be

Accepted Answer

A) the lower number of the two "middle" scores. 
B) the higher number of the two "middle" scores. 
C) a listing of both middle scores. 
D) the average of the two scores that "share" the middle spot. 
A) the lower number of the two "middle" scores. 
B) the higher number of the two "middle" scores. 
C) a listing of both middle scores. 
D) the average of the two scores that "share" the middle spot.

Question 15

To decide which college applicants have the best chances for success,most colleges have formulas that use

Accepted Answer

A) multiple correlations. 
B) correlation matrixes. 
C) random assignment. 
D) frequency distributions. 
A) multiple correlations. 
B) correlation matrixes. 
C) random assignment. 
D) frequency distributions.

Question 16

The Jones have five children aged 3,5,7,10 and 12.The median age of the Jones children is _______.

Accepted Answer

The answer of The Jones have five children aged 3,5,7,10...

Question 17

Inferential statistics are used for

Accepted Answer

A) generalization from small samples. 
B) drawing conclusions. 
C) decision making based on limited data. 
D) all of these. 
A) generalization from small samples. 
B) drawing conclusions. 
C) decision making based on limited data. 
D) all of these.

Question 18

If the points on a scatter diagram are clustered in a pattern that extends from upper left to the lower right,this would suggest that the two variables depicted are

Accepted Answer

A) normally distributed. 
B) not correlated. 
C) negatively correlated. 
D) positively correlated. 
A) normally distributed. 
B) not correlated. 
C) negatively correlated. 
D) positively correlated.

Question 19

Dr.Sandford indicates the frequencies of his data using vertical bars.Dr.Sandford is constructing a

Accepted Answer

A) frequency polygon. 
B) scatter diagram. 
C) normal distribution. 
D) histogram. 
A) frequency polygon. 
B) scatter diagram. 
C) normal distribution. 
D) histogram.

Question 20

If a correlation is +1.00,then the relationship that exists would be referred to as a(n) _______ positive relationship.

Accepted Answer

The answer of If a correlation is +1.00,then the relationship...

Exam 81: Understanding Descriptive and Inferential Statistics for Psychological Research

The more time students spend studying,the higher their grades are.This would be a

For a group of students,a researcher obtains their grades in high school and their grades in college and plot the intersection of these paired measures for each person on a graph as a single point.This graph is called a

For the numbers 10,19,2,9,and 15,the range is

If you square the correlation coefficient,you will get a number telling the

The number of standard deviation units a score falls above or below the mean defines its

On his psychology test,Miguel must determine what percent of all cases are found between a standard deviation (SD)of +3 and a standard deviation (SD)of -3 on a normal curve.His answer to this problem should be __________ percent.

A psychologist notes that the higher a couple's socioeconomic and educational status,the smaller the number of children they are likely to have.This psychologist is describing a relationship called a

The absence of a mathematical relationship between two measures is referred to as a

Zack had a score of 90 in a class with a mean of 80 and a standard deviation of 10.His z-score is

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?

If the mean on a test is 90 and the standard deviation is 10,a person with a z-score of -1.0 scored which of the following on the test?

If the correlation between anxiety and test scores is -.85,then we can safely conclude that

Jonas is trying to determine the median for an even number of scores.The median will be

To decide which college applicants have the best chances for success,most colleges have formulas that use

The Jones have five children aged 3,5,7,10 and 12.The median age of the Jones children is _______.

Inferential statistics are used for

If the points on a scatter diagram are clustered in a pattern that extends from upper left to the lower right,this would suggest that the two variables depicted are

Dr.Sandford indicates the frequencies of his data using vertical bars.Dr.Sandford is constructing a

If a correlation is +1.00,then the relationship that exists would be referred to as a(n) _______ positive relationship.

Introduction

How to Study Psychology

Introducing Psychology: Psychology, Critical Thinking, and Science

Introducing Psychology: Psychology Then and Now

Introducing Psychology: the Psychology Experiment

Introducing Psychology: Non-Experimental Research Methods

Psychology in Action: Thinking Critically About the Media

Brain and Behavior: Neurons and the Nervous System

Brain and Behavior: Brain Research

Brain and Behavior: Hemispheres and Lobes of the Cortex

Brain and Behavior: Sub-Cortex and Endocrine System

Psychology in Action: Handedness

Human Development: Heredity and Environment

Human Development: Emotional and Social Development in Childhood

Human Development: Language and Cognitive Development in Childhood

Human Development: Adolescence and Adulthood

Psychology in Action: Well-Being and Happiness

Sensation and Perception: Sensory Processes

Sensation and Perception: Vision

Sensation and Perception: The Other Senses

Sensation and Perception: Perceptual Processes

Sensation and Perception: Perception and Objectivity

Psychology in Action: Extrasensory Perception

Consciousness: States of Consciousness

Consciousness: Sleep and Dreams

Consciousness: Psychoactive Drugs

Psychology in Action: Exploring and Using Dreams

Conditioning and Learning: Types of Learning

Conditioning and Learning: Classical Conditioning

Conditioning and Learning: Operant Conditioning

Conditioning and Learning: Reinforcement and Punishment

Psychology in Action: Behavioral Self-Management

Memory: Memory Systems

Memory: Forgetting

Memory: Exceptional Memory and Improving Memory

Psychology in Action: Mnemonics

Cognition and Intelligence: Imagery, Concepts, and Language

Cognition and Intelligence: Problem Solving

Cognition and Intelligence: Creative Thinking and Intuition

Cognition and Intelligence: Intelligence

Psychology in Action: Enhancing Creativity

Motivation and Emotion: Overview of Motives and Emotions

Motivation and Emotion: Motivation in Detail

Motivation and Emotion: Emotion in Detail

Psychology in Action: Emotional Intelligence

Human Sexuality: Sexual Development and Orientation

Human Sexuality: Gender Development, Androgyny, and Gender Variance

Human Sexuality: Sexual Behavior, Response, and Attitudes

Psychology in Action: Sexual Problems

Personality: Overview of Personality

Personality: Trait Theories

Personality: Psychoanalytic and Humanistic Theories

Personality: Behavioral and Social Learning Theories

Psychology in Action: Understanding Shyness

Health, Stress, and Coping: Health Psychology

Health, Stress, and Coping: Stress, Frustration, and Conflict

Health, Stress, and Coping: Defenses, Helplessness, and Depression

Health, Stress, and Coping: Stress and Health

Psychology in Action: Stress Management

Psychological Disorders: Normality and Psychopathology