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chapter 13 and 14 review questions(Evaluating Descriptive Data) with correct answers
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chapter 13 and 14 review questions(Evaluating Descriptive Data) with correct answers
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chapter 13 and 14 reviewquestions(Evaluating Descriptive Data)
1. Which of the following statements correctly contrasts inferential statistics and descriptive statistics?
A) Inferential statistics are used to present data and information, whereas descriptive statistics are used
to develop population parameters.
B) Inferential statistics are based on predicted data, whereas descriptive statistics are based on collected
data.
C) Inferential statistics are gathered using univariate analysis, whereas descriptive statistics are gathered
using multivariate analysis.
D) Inferential statistics are used to make predictions about phenomena, whereas descriptive statistics
are used to explain characteristics of variables. - correct answer ✔✔D) Inferential statistics are used to
make predictions about phenomena, whereas descriptive statistics are used to explain characteristics of
variables.
2. A researcher analyzing data from a study that investigated the relationship between use of infrared
therapy and circulation in patients with diabetic peripheral neuropathy would most likely use which type
of analysis?
A) Univariate
B) Bivariate
C) Trivariate
D) Multivariate - correct answer ✔✔B) Bivariate
3. Why is grouped data presented more often than ungrouped data?
A) Grouping data results in some loss of information.
B) Nominal and ordinal data cannot be interpreted unless the data are grouped.
C) Grouping data into smaller classifications makes it easier to interpret.
D) Overlapping categories can be used to analyze grouped data. - correct answer ✔✔C) Grouping data
into smaller classifications makes it easier to interpret.
, 4. Which of the following is calculated by dividing the frequency of an event by the total number of
events?
A) Frequency analysis
B) Percentage distribution
C) Population parameter
D) Percentage statement - correct answer ✔✔B) Percentage distribution
5. What do measures of central tendency describe?
A) Accuracy of predictions made by researchers
B) Average or typical case found in the data
C) Reliability and generalizability of the data
D) Amount of dispersion in the sample - correct answer ✔✔B) Average or typical case found in the data
6. Nursing educators are reviewing scores from an examination to determine what score occurred most
frequently. Which measure of central tendency are they seeking?
A) Mean
B) Median
C) Mode
D) Standard deviation - correct answer ✔✔C) Mode
7. Which of the following statements about mean and median is true?
A) Both mean and median are greatly affected by outliers.
B) Neither mean nor median is greatly affected by outliers.
C) Both mean and median are less accurate measures of central tendency than mode.
D) Both mean and median can be values that do not appear in the data set. - correct answer ✔✔D) Both
mean and median can be values that do not appear in the data set.
8. Which measure is most likely to be affected by the presence of an extreme value in the data set?
A) Mean
B) Median
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