STATISTICS FOR NURSING RESEARCH A
WORKBOOK FOR EVIDENCE BASED PRACTICE
4TH EDITION EXAM QUESTIONS AND
SOLUTIONS GRADED A+
◉ 2. Using decision theory, if the level of significance was set at 0.05,
which of the following probability levels from statistical analyses
would indicate the greatest significant difference?
Answer: *None of the above (0.04, 0.01, 0.001)
According to decision theory, results are expressed dichotomously.
Results are either significantly different or not significantly different.
There are not degrees of significant difference.
◉ 3. The researcher understands that a type I error occurs when
the:
Answer: *results indicate a significant difference when in reality
there is no difference.
A type I error indicates a significant difference when there is no
difference.
◉ 4. The nurse researcher understands that power is the:
, Answer: *probability that a statistical test will detect a significant
difference that exists.
Power is the capacity of a statistical analysis to identify real
differences (or relationships) in the data.
◉ 5. Which of the following is not a descriptive statistic?
Answer: *Correlational analysis
Correlational analysis is not a descriptive statistic, but it is an
inferential statistic.
◉ 6. The researcher understands that the t-test is used to?
Answer: *Test for a significant difference between the means of two
samples.
The t-test is used to test for a significant difference between the
means of two samples.
◉ 7. The researcher understands the most common purpose of a
Pearson' s correlation is to examine:
Answer: *relationships among variables.
WORKBOOK FOR EVIDENCE BASED PRACTICE
4TH EDITION EXAM QUESTIONS AND
SOLUTIONS GRADED A+
◉ 2. Using decision theory, if the level of significance was set at 0.05,
which of the following probability levels from statistical analyses
would indicate the greatest significant difference?
Answer: *None of the above (0.04, 0.01, 0.001)
According to decision theory, results are expressed dichotomously.
Results are either significantly different or not significantly different.
There are not degrees of significant difference.
◉ 3. The researcher understands that a type I error occurs when
the:
Answer: *results indicate a significant difference when in reality
there is no difference.
A type I error indicates a significant difference when there is no
difference.
◉ 4. The nurse researcher understands that power is the:
, Answer: *probability that a statistical test will detect a significant
difference that exists.
Power is the capacity of a statistical analysis to identify real
differences (or relationships) in the data.
◉ 5. Which of the following is not a descriptive statistic?
Answer: *Correlational analysis
Correlational analysis is not a descriptive statistic, but it is an
inferential statistic.
◉ 6. The researcher understands that the t-test is used to?
Answer: *Test for a significant difference between the means of two
samples.
The t-test is used to test for a significant difference between the
means of two samples.
◉ 7. The researcher understands the most common purpose of a
Pearson' s correlation is to examine:
Answer: *relationships among variables.
