Question 1

Discuss how to determine the direction and strength of correlation coefficients.

Accepted Answer

The answer of Discuss how to determine the direction and...

Question 2

Histograms cannot present frequency distribution data.

Accepted Answer

A) True 
 B)False

Question 3

Parameters are numerical indices that describe a population.

Accepted Answer

A) True 
 B)False

Question 4

If a researcher concludes that a null hypothesis is false when it is actually true, he or she has committed a ______ error.

Accepted Answer

A)  standard 
B)  Type I 
C)  Type II 
D)  Type III

Question 5

Explain common techniques for descriptive analysis in quantitative research.

Accepted Answer

The answer of Explain common techniques for descriptive analysis in...

Question 6

If a null hypothesis is actually false when it is concluded to be true, a ______ error has been made.

Accepted Answer

A)  standard 
B)  Type I 
C)  Type II 
D)  Type III

Question 7

Which of the following describes a frequency distribution table?

Accepted Answer

A)  It is tabulation of the number of times each value of a variable occurs 
B)  Scores always range from the highest to the lowest 
C)  Scores always range from the lowest to the highest 
D)  Has at least four columns.

Question 8

Inferential statistics are used specifically to test hypotheses about the following categories of analyses except ______.

Accepted Answer

A)  tests of differences between groups 
B)  tests of relationships 
C)  tests for prediction 
D)  tests for central tendency

Question 9

______ are the procedures the researcher used to determine if the difference between sample means is large enough to rule out sampling error as an explanation for the difference.

Accepted Answer

A)  Probability tests 
B)  Significance tests 
C)  Conversion tests 
D)  Hypotheses tests

Question 10

Which of the following describes percentile ranks?

Accepted Answer

A)  They are appropriately used to report relative standing for variables measured on ratio scales. 
B)  They are the most basic type of standard score. 
C)  They are symbolized by pr². 
D)  They are scores that indicate one's relative standing in comparison with percentages of others who have taken the same test.

Question 11

Explain how researchers use statistical software in quantitative studies.

Accepted Answer

The answer of Explain how researchers use statistical software in...

Question 12

One main characteristic of a normal distribution is that ______.

Accepted Answer

A)  the percentage of cases in each standard deviation is known 
B)  it is brief, clear, and simply conducted 
C)  it occurs in several phases 
D)  it combines cluster and individual random sampling

Question 13

Parameters are numerical indices and procedures that describe the sample and help the researcher make inferences about the population.

Accepted Answer

A) True 
 B)False

Question 14

The midpoint of all the scores is called ______.

Accepted Answer

A)  a plan for systematic development 
B)  a lack of randomization 
C)  a plan of systematic approaches 
D)  the median

Question 15

Describe the difference between statistical significance and practical significance.

Accepted Answer

The answer of Describe the difference between statistical significance and...

Question 16

Which of the following does not describe frequency distributions?

Accepted Answer

A)  useful for variables that are measured on nominal or ordinal scales 
B)  useful for variables that are measured on interval or ratio scales 
C)  extremely efficient way to simplify and summarize data 
D)  provide a mechanism for checking the accuracy of data

Question 17

Define and explain why samples are used in research.

Accepted Answer

The answer of Define and explain why samples are used...

Question 18

Describe what it means that statistical procedures can "make other inferences about the population."

Accepted Answer

The answer of Describe what it means that statistical procedures...

Question 19

Which of the following is not true concerning codebooks?

Accepted Answer

A)  list variables indicating how responses for items will be coded 
B)  list questions indicating how responses for items will be coded 
C)  list participant and site information 
D)  provide invaluable guidance to the researcher

Question 20

Which of the following describes measures of central tendency?

Accepted Answer

A)  They improve education, in general, by incorporating change. 
B)  They are determined by the participants' location. 
C)  They consist of a single score that represents what is typical among a group. 
D)  They emphasize people/sites that are accessible to the researcher.

Exam 13: Quantitative Data Analysis

Discuss how to determine the direction and strength of correlation coefficients.

Histograms cannot present frequency distribution data.

Parameters are numerical indices that describe a population.

If a researcher concludes that a null hypothesis is false when it is actually true, he or she has committed a ______ error.

Explain common techniques for descriptive analysis in quantitative research.

If a null hypothesis is actually false when it is concluded to be true, a ______ error has been made.

Which of the following describes a frequency distribution table?

Inferential statistics are used specifically to test hypotheses about the following categories of analyses except ______.

______ are the procedures the researcher used to determine if the difference between sample means is large enough to rule out sampling error as an explanation for the difference.

Which of the following describes percentile ranks?

Explain how researchers use statistical software in quantitative studies.

One main characteristic of a normal distribution is that ______.

Parameters are numerical indices and procedures that describe the sample and help the researcher make inferences about the population.

The midpoint of all the scores is called ______.

Describe the difference between statistical significance and practical significance.

Which of the following does not describe frequency distributions?

Define and explain why samples are used in research.

Describe what it means that statistical procedures can "make other inferences about the population."

Which of the following is not true concerning codebooks?

Which of the following describes measures of central tendency?