Question 1

Inferential statistics allow us to generalize from the behavior of small groups of participants to that of the larger groups they represent.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class?

Accepted Answer

A)  scatter diagram
B)  variability plot
C)  correlational matrix
D)  frequency distribution

Question 3

The difference between the highest and lowest scores is known as the

Accepted Answer

A)  range.
B)  average deviation.
C)  median.
D)  standard deviation.

Question 4

In looking over all of his students' grades on the last test,Dr.Abbot notices that there appears to be many high scores in one of his three classes.To determine if this class did perform better than the other two classes on this same test,Dr.Abbot decides to compute a mean and median for each class.To compare his classes,Dr.Abbot is using

Accepted Answer

A)  inferential statistics.
B)  measures of variability.
C)  measures of central tendency.
D)  frequency distributions.

Question 5

Regarding correlations,which of the following statements is FALSE?

Accepted Answer

A)  A correlation of -1.00 means that zero percent of the variation in the Y measure is accounted for by knowing the X measure.
B)  If we know that two measures are correlated,and we know a person's score on one measure,we can predict his or her score on the other.
C)  Correlations help us to identify relationships that are important,such as the relationship between cigarette smoking and lung cancer.
D)  Most colleges have formulas that use multiple correlations to decide which applicants have the best chances for success.

Question 6

An estimate of how often experimental results could have occurred by chance alone are provided by using tests of
__________.

Accepted Answer

statistica...

Question 7

Which of the following is NOT an example of a correlational study?

Accepted Answer

A)  Will a new reading curriculum increase reading comprehension test scores made by third graders?
B)  Is the chance of having a heart attack related to having a hostile personality?
C)  How is wealth related to happiness?
D)  Is there an association between childhood exposure to the Internet and IQ at age 20?

Question 8

For the numbers 10,17,2,9,and 15,the range is _______.

Accepted Answer

The answer of For the numbers 10,17,2,9,and 15,the range is...

Question 9

A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college.She selects 400 students from the total student body of 4,000 students to participate in this study.The 400 students would be considered the

Accepted Answer

A)  sample.
B)  experimental group.
C)  population.
D)  control group.

Question 10

When a psychologist wishes to generalize results to an entire population,he or she would use _______ statistics.

Accepted Answer

A)  descriptive
B)  inferential
C)  holistic
D)  correlational

Question 11

A graph that plots the intersection of paired measures,that is,the points at which paired X and Y measures cross is called a

Accepted Answer

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

Question 12

The range is a

Accepted Answer

A)  measure of central tendency.
B)  measure of variability.
C)  type of correlation.
D)  type of inferential statistic.

Question 13

Using the data she has collected,Jasmine breaks down the entire range of possible scores into classes of equal size and then records the number of scores falling into each class onto a table to form what is known as a(n)
___________.

Accepted Answer

frequency ...

Question 14

How much must two means differ before we can consider the difference "real" and not due to chance? To answer this question,we must use

Accepted Answer

A)  coefficients of correlation.
B)  tests of statistical significance.
C)  graphical statistics.
D)  random selection.

Question 15

For his study,Dr.Tabor has chosen the most commonly used correlation coefficient,which is the

Accepted Answer

A)  standard coefficient.
B)  Pearson r.
C)  deviation.
D)  frequency coefficient.

Question 16

Which of the following provide an estimate of how often experimental results could have occurred by chance alone?

Accepted Answer

A)  coefficients of correlation
B)  random selections
C)  graphical statistics
D)  tests of statistical significance

Question 17

Researchers usually cannot use populations when doing their studies because

Accepted Answer

A)  populations are not representative of a sample.
B)  it is usually impractical or impossible.
C)  statistical methods are only applicable to sample groups.
D)  the requirement of randomness cannot be met.

Question 18

Dr.Rodriquez discovers that the more education people have,the more money they tend to earn.Dr.Rodriquez has illustrated a(n) _______ correlation.

Accepted Answer

The answer of Dr.Rodriquez discovers that the more education people...

Question 19

Which of the following correlation coefficients indicates the strongest relationship?

Accepted Answer

A)  +.81
B)  -.65
C)  +1.05
D)  +.55

Question 20

Professor Warren calculated the mean,median,and mode of the scores made on the midterm exam.These descriptive statistics are known as

Accepted Answer

A)  inferential statistics.
B)  the measures of central tendency.
C)  the measures of variability.
D)  graphical statistics.

Exam 81: Understanding Descriptive and Inferential Statistics for Psychological Research

Which of the following is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class?

Correct Answer
verified

The difference between the highest and lowest scores is known as the

Correct Answer
verified

An estimate of how often experimental results could have occurred by chance alone are provided by using tests of __________.

Correct Answer
verified
statistica...
View Answer

Which of the following provide an estimate of how often experimental results could have occurred by chance alone?

Correct Answer
verified

Inferential statistics allow us to generalize from the behavior of small groups of participants to that of the larger groups they represent.

Correct Answer
verified

Correct Answer
verified

When a psychologist wishes to generalize results to an entire population,he or she would use _______ statistics.

Correct Answer
verified

For the numbers 10,17,2,9,and 15,the range is _______.

Correct Answer
verified

How much must two means differ before we can consider the difference "real" and not due to chance? To answer this question,we must use

Correct Answer
verified

Which of the following is NOT an example of a correlational study?

Correct Answer
verified

Dr.Rodriquez discovers that the more education people have,the more money they tend to earn.Dr.Rodriquez has illustrated a(n) _______ correlation.

Correct Answer
verified

Which of the following correlation coefficients indicates the strongest relationship?

Correct Answer
verified

A graph that plots the intersection of paired measures,that is,the points at which paired X and Y measures cross is called a

Correct Answer
verified

Researchers usually cannot use populations when doing their studies because

Correct Answer
verified

The range is a

Correct Answer
verified

Professor Warren calculated the mean,median,and mode of the scores made on the midterm exam.These descriptive statistics are known as

Correct Answer
verified

For his study,Dr.Tabor has chosen the most commonly used correlation coefficient,which is the

Correct Answer
verified

Regarding correlations,which of the following statements is FALSE?

Correct Answer
verified

A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college.She selects 400 students from the total student body of 4,000 students to participate in this study.The 400 students would be considered the

Correct Answer
verified

Using the data she has collected,Jasmine breaks down the entire range of possible scores into classes of equal size and then records the number of scores falling into each class onto a table to form what is known as a(n) ___________.

Correct Answer
verified
frequency ...
View Answer

Exam 81: Understanding Descriptive and Inferential Statistics for Psychological Research

Which of the following is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class?

Correct AnswerverifiedShow Answer

The difference between the highest and lowest scores is known as the

Correct AnswerverifiedShow Answer

An estimate of how often experimental results could have occurred by chance alone are provided by using tests of __________.

Correct Answerverifiedstatistica...View AnswerShow Answer

Which of the following provide an estimate of how often experimental results could have occurred by chance alone?

Correct AnswerverifiedShow Answer

Inferential statistics allow us to generalize from the behavior of small groups of participants to that of the larger groups they represent.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When a psychologist wishes to generalize results to an entire population,he or she would use _______ statistics.

Correct AnswerverifiedShow Answer

For the numbers 10,17,2,9,and 15,the range is _______.

Correct AnswerverifiedShow Answer

How much must two means differ before we can consider the difference "real" and not due to chance? To answer this question,we must use

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of a correlational study?

Correct AnswerverifiedShow Answer

Dr.Rodriquez discovers that the more education people have,the more money they tend to earn.Dr.Rodriquez has illustrated a(n) _______ correlation.

Correct AnswerverifiedShow Answer

Which of the following correlation coefficients indicates the strongest relationship?

Correct AnswerverifiedShow Answer

A graph that plots the intersection of paired measures,that is,the points at which paired X and Y measures cross is called a

Correct AnswerverifiedShow Answer

Researchers usually cannot use populations when doing their studies because

Correct AnswerverifiedShow Answer

The range is a

Correct AnswerverifiedShow Answer

Professor Warren calculated the mean,median,and mode of the scores made on the midterm exam.These descriptive statistics are known as

Correct AnswerverifiedShow Answer

For his study,Dr.Tabor has chosen the most commonly used correlation coefficient,which is the

Correct AnswerverifiedShow Answer

Regarding correlations,which of the following statements is FALSE?

Correct AnswerverifiedShow Answer

A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college.She selects 400 students from the total student body of 4,000 students to participate in this study.The 400 students would be considered the

Correct AnswerverifiedShow Answer

Using the data she has collected,Jasmine breaks down the entire range of possible scores into classes of equal size and then records the number of scores falling into each class onto a table to form what is known as a(n) ___________.

Correct Answerverifiedfrequency ...View AnswerShow Answer

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frequency ...
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