Question 1

Nonsignificant findings are interpreted to mean the:

Accepted Answer

A)  differences between the groups are of little importance clinically. 
B)  groups are not statistically different. 
C)  study did not detect any differences between groups. 
D)  study results approached significance, but were not mathematically supported. 
A)  differences between the groups are of little importance clinically. 
B)  groups are not statistically different. 
C)  study did not detect any differences between groups. 
D)  study results approached significance, but were not mathematically supported.

Question 2

The likelihood that a statistical value obtained through analysis of the data is likely to occur in any two samples selected from the same population is called:

Accepted Answer

A)  degrees of freedom. 
B)  induction. 
C)  interval estimation. 
D)  probability. 
A)  degrees of freedom. 
B)  induction. 
C)  interval estimation. 
D)  probability.

Question 3

The mean of the following set of numbers (12, 4, 13, 20, 4, 10, 14) is:

Accepted Answer

A) 4. 
B) 10. 
C) 11. 
D) 17. 
A) 4. 
B) 10. 
C) 11. 
D) 17.

Question 4

What proportion of the standardized scores of a sample lies between the Z-scores of -1.96 and +1.96?

Accepted Answer

A) 34.0% 
B) 47.7% 
C) 68.3% 
D) 95.5% 
A) 34.0% 
B) 47.7% 
C) 68.3% 
D) 95.5%

Question 5

Level of significance, sample size, power, and effect size are the four components of:

Accepted Answer

A)  decision theory. 
B)  exploratory analysis. 
C)  inference. 
D)  power analysis. 
A)  decision theory. 
B)  exploratory analysis. 
C)  inference. 
D)  power analysis.

Question 6

A Type I error could occur for which of the following reasons?

Accepted Answer

A)  Large difference between groups 
B)  Large sample size 
C)  Lenient level of significance 
D)  Normal distribution 
A)  Large difference between groups 
B)  Large sample size 
C)  Lenient level of significance 
D)  Normal distribution

Question 7

Descriptive statistics should be reported in every study to:

Accepted Answer

A)  determine validity. 
B)  indicate reliability. 
C)  provide a powerful analysis of data. 
D)  show the sample characteristics. 
A)  determine validity. 
B)  indicate reliability. 
C)  provide a powerful analysis of data. 
D)  show the sample characteristics.

Question 8

The median is represented by which score in the following frequency distribution?

Accepted Answer

A)  12 
B)  10 
C)  9 
D)  7 
A)  12 
B)  10 
C)  9 
D)  7

Question 9

Which of the following is true about the chi-square statistic?

Accepted Answer

A)  Expected and observed frequencies or proportions are compared. 
B)  Interval level data are used for all variables. 
C)  Post hoc testing is used to identify areas of group differences. 
D)  Results are reported in terms of differences between group means. 
A)  Expected and observed frequencies or proportions are compared. 
B)  Interval level data are used for all variables. 
C)  Post hoc testing is used to identify areas of group differences. 
D)  Results are reported in terms of differences between group means.

Question 10

Which of the following questions relates to generalization?

Accepted Answer

A)  Are the findings generally significant to people in the study? 
B)  Can these findings be applied to other groups or settings? 
C)  Does the degree of control in the study allow for statistical significance? 
D)  How many alternative explanations or rival hypotheses can be proposed? 
A)  Are the findings generally significant to people in the study? 
B)  Can these findings be applied to other groups or settings? 
C)  Does the degree of control in the study allow for statistical significance? 
D)  How many alternative explanations or rival hypotheses can be proposed?

Question 11

If a nurse researcher found that older patients asked fewer questions before surgery than younger patients, the relationship would be described statistically as:

Accepted Answer

A)  negative. 
B)  null. 
C)  positive. 
D)  random. 
A)  negative. 
B)  null. 
C)  positive. 
D)  random.

Question 12

The mean is represented by which score in the following frequency distribution?

Accepted Answer

A)  12 
B)  10 
C)  9 
D)  7 
A)  12 
B)  10 
C)  9 
D)  7

Question 13

Which test statistic is calculated in analysis of variance (ANOVA)?

Accepted Answer

A)  r 
B)  F 
C)  t 
D)  X² 
A)  r 
B)  F 
C)  t 
D)  X²

Question 14

Assuming a normal distribution, where would you find approximately two thirds of the scores if they ranged from 30 to 68, M = 45, and SD = 7 Between:

Accepted Answer

A)  30 and 68 
B)  31 and 59 
C)  37 and 61 
D)  38 and 52 
A)  30 and 68 
B)  31 and 59 
C)  37 and 61 
D)  38 and 52

Question 15

In the following frequency distribution of data, the score 12 is which measure of central tendency?

Accepted Answer

A)  Frequency 
B)  Mean 
C)  Median 
D)  Mode 
A)  Frequency 
B)  Mean 
C)  Median 
D)  Mode

Nonsignificant findings are interpreted to mean the:

The likelihood that a statistical value obtained through analysis of the data is likely to occur in any two samples selected from the same population is called:

The mean of the following set of numbers (12, 4, 13, 20, 4, 10, 14) is:

What proportion of the standardized scores of a sample lies between the Z-scores of -1.96 and +1.96?

Level of significance, sample size, power, and effect size are the four components of:

A Type I error could occur for which of the following reasons?

Descriptive statistics should be reported in every study to:

The median is represented by which score in the following frequency distribution?

Which of the following is true about the chi-square statistic?

Which of the following questions relates to generalization?

If a nurse researcher found that older patients asked fewer questions before surgery than younger patients, the relationship would be described statistically as:

The mean is represented by which score in the following frequency distribution?

Which test statistic is calculated in analysis of variance (ANOVA)?

Assuming a normal distribution, where would you find approximately two thirds of the scores if they ranged from 30 to 68, M = 45, and SD = 7 Between:

In the following frequency distribution of data, the score 12 is which measure of central tendency?

Introduction to Nursing Research and Evidence-Based Practice

Introduction to the Quantitative Research Process

Introduction to the Qualitative Research Process

Examining Ethics in Nursing Research

Research Problems, Purposes, and Hypotheses

Understanding the Literature Review in Published Studies

Understanding Theory and Research Frameworks

Clarifying Quantitative Research Designs

Examining Populations and Samples in Research

Clarifying Measurement and Data Collection in Quantitative Research

Critical Appraisal of Quantitative and Qualitative Research for Nursing Practice

Building an Evidence-Based Nursing Practice

Introduction to Outcomes Research

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Exam 11: Understanding Statistics in Research

Nonsignificant findings are interpreted to mean the:

The likelihood that a statistical value obtained through analysis of the data is likely to occur in any two samples selected from the same population is called:

The mean of the following set of numbers (12, 4, 13, 20, 4, 10, 14) is:

What proportion of the standardized scores of a sample lies between the Z-scores of -1.96 and +1.96?

Level of significance, sample size, power, and effect size are the four components of:

A Type I error could occur for which of the following reasons?

Descriptive statistics should be reported in every study to:

The median is represented by which score in the following frequency distribution?

Which of the following is true about the chi-square statistic?

Which of the following questions relates to generalization?

If a nurse researcher found that older patients asked fewer questions before surgery than younger patients, the relationship would be described statistically as:

The mean is represented by which score in the following frequency distribution?

Which test statistic is calculated in analysis of variance (ANOVA)?

Assuming a normal distribution, where would you find approximately two thirds of the scores if they ranged from 30 to 68, M = 45, and SD = 7 Between:

In the following frequency distribution of data, the score 12 is which measure of central tendency?

Introduction to Nursing Research and Evidence-Based Practice

Introduction to the Quantitative Research Process

Introduction to the Qualitative Research Process

Examining Ethics in Nursing Research

Research Problems, Purposes, and Hypotheses

Understanding the Literature Review in Published Studies

Understanding Theory and Research Frameworks

Clarifying Quantitative Research Designs

Examining Populations and Samples in Research

Clarifying Measurement and Data Collection in Quantitative Research

Critical Appraisal of Quantitative and Qualitative Research for Nursing Practice

Building an Evidence-Based Nursing Practice

Introduction to Outcomes Research

Filters