Chapter 11 Flashcards
Which of the following is not a descriptive statistic?
correlational analysis
Which of the following describes the purpose of the Chi-square test of independence?
Determines whether two variables are independent or related
Is a very weak statistical test
Has a high risk of a type II error
The most common purpose of a Pearson’s correlation is to examine which of the following?
Relationships among variables
A researcher wanted to study the elements or variables associated with fear. Which of the following would be an appropriate statistical measure?
Factor analysis
Which of the following describes the tails of the normal curve?
They are representative samples that may not belong to the same population.
They are the extreme statistical values on the peripheral ends of the normal curve.
They are defined by the level of significance selected by the researcher.
A researcher wants to conduct a study examining the relationship between gender and heart disease. Which of the following methods would be most appropriate?
Chi-square
In any study in which the data are numerical, data analysis begins with which of the following?
Descriptive statistics
During data cleaning, the researcher will perform which of the following? Select all that apply
Organize according to responses Sort according to demographics Correct all errors Check the data for accuracy Identify missing data points and supply the data
Which of the following leads to a type I error?
When results indicate a significant difference when there is no difference
The researcher understands that exploratory analysis is used for all except which of the following?
Generalize to a larger population
The risk of a type II error increases with which of the following? Select all that apply.
Small effect sizes
Small samples
Low levels of power
Which of the following is true of a one-tailed test of significance?
Indicates that extreme scores on only one tail are considered significant
When interpreting research outcomes, the type of results that agree with those predicted by the researcher and support the logical links developed by the researcher among the framework, purpose, study questions, hypotheses, variables, and measurement tools is known as?
Significant results
What do measures of dispersion indicate?
Individual differences of the members of the sample
A researcher wants to compare the results of two tests completed on the same group. Which of the following methods would be most appropriate?
Z-score
For what purpose is the t-test used?
To test for a significant difference between the means of two samples
Which of the following best explains power?
It is the probability that a statistical test will detect a significant difference that exists.
Which of the following is the purpose of exploratory data analysis? Select all that apply.
Obtain a better understanding of the data
Identify outliers
Determine the nature of variation in the data
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?
None of the above
Which of the following does the normal curve indicate?
Theoretical frequency distribution of all possible values in a population
For what reason is it important to describe the sample?
Determine if the sample is representative of the target population
Allow readers to determine if the sample is similar to persons in their clinical setting
Determine if groups being compared are equivalent
To judge statistical suitability while critiquing a study, the nurse researcher needs to know all except which of the following?
Reliability of the measures
To judge statistical suitability while critiquing a study, the nurse researcher needs to know all except which of the following?
Reliability of the measures
Types of results from inferential statistical analyses include all except which of the following?
Findings
Which of the following is not a characteristic of ANOVA?
Can be used only with two groups
