Question 1

A measure of death anxiety resulted in a mean score of 5.4 with a standard deviation of 1.6.Where would 34% of the scores fall?

Accepted Answer

A)   Between 2.2 and 8.6
B)   Between 3.8 and 7.0
C)   Between 3.8 and 5.4
D)   Between 5.4 and 8.6 C

Question 2

The nurse researcher opts to use a measure of variability.Which measure of variability does the researcher recognize as being most unstable?

Accepted Answer

A)   Mean
B)   Median
C)   Range
D)   Semiquartile range C

Question 3

A nurse researcher would opt to use factor analysis in which case?

Accepted Answer

A)   To control statistically for a variable and measure differences among group means
B)   To take a large number of variables and group them into a smaller number of factors
C)   To test the relationship between two variables measured at interval- or ratio-level data
D)   To measure the relationship between one outcome or dependent variable and several dependent variables B

Question 4

Which measures of central tendency allow for rank ordering with equal intervals?

Accepted Answer

A)   Mode
B)   Range
C)   Median
D)   Mean
E)   Semiquartile rangeF)  PercentileG)  SD

Question 5

The alpha level that is interpreted by the nurse researcher as a highly statistically significant result is what?

Accepted Answer

A)   p = .20
B)   p = .02
C)   p = .002
D)   p = .0002

Question 6

In a study about how women adjust to living with breast cancer,the youngest participant was 23 years old and the oldest participant was 89 years old.What do these facts represent?

Accepted Answer

A)   Mean age
B)   Modal age
C)   Median age
D)   Range in age

Question 7

What conclusion can be drawn from statistics that indicate that the average cost of a house in a specific neighbourhood is $150,000,the range is $48,000 to $2,000,000,the median house cost is $98,000,and the mode is $90,000?

Accepted Answer

A)   The standard deviation is small.
B)   The mode can be calculated from the median.
C)   The cost of a "typical" house in this neighbourhood is $150,000.
D)   The mean does not reflect the true housing cost in this neighbourhood.

Question 8

The nurse researcher is interested in using nominal level data.The object or event that could be used if nominal-level data are of primary interest is what?

Accepted Answer

A)   Test scores
B)   Education level
C)   Marital status
D)   Weight

Question 9

A nurse researcher would opt to use measures of central tendency in which case?

Accepted Answer

A)   When there is a need to describe how reliably the findings can be generalized
B)   When there is a need to describe how much dispersion is in the sample
C)   When there is a need to describe the accuracy of predictions made
D)   When there is a need to describe the average member of the sample

Question 10

Which characteristic is an essential criterion for categorizing an object,event,or fact as nominal-level data?

Accepted Answer

A)   The degree of the characteristic must be positively related to the number assigned.
B)   Rank orders must be calculated for meaningful interpretation.
C)   Categories must be mutually exclusive.
D)   Category ranges cannot overlap.

Question 11

The nurse researcher opts to use ratio-level data.The researcher's primary concern will be what?

Accepted Answer

A)   Categories must be mutually exclusive.
B)   Intervals between data categories must be equal.
C)   The rank of zero (0)  represents the absence of the measured variable.
D)   Variance between assigned categories is qualitative rather than quantitative.

Question 12

The nurse researcher's data contain extremes of high and low scores.The measure of central tendency that should be used in order to be least affected by extremes of high and low scores is what?

Accepted Answer

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

Question 13

The nurse researcher is interested in estimating how reliably data can be used to generalize the findings of a study.In order for this to occur,the researcher should use what?

Accepted Answer

A)   Inferential statistics
B)   Descriptive statistics
C)   Nonparametric statistics
D)   Mathematical statistics

Question 14

The nurse researcher is using a nursing degree as a variable in a research study.The level of measurement most appropriate in this case is what?

Accepted Answer

A)   Nominal
B)   Ordinal
C)   Interval
D)   Ratio

Question 15

The nurse researcher should report the mean,mode,and median of a variable in a research study in which case?

Accepted Answer

A)   When the distribution is uneven.
B)   When the distribution is wide.
C)   When the distribution is narrow.
D)   When the distribution is symmetrical.

Question 16

Which data measurement scales typically use nonparametric tests of significance?

Accepted Answer

A)   Nominal
B)   Ordinal
C)   Interval
D)   Ratio

Question 17

The nurse researcher is interested in having the greatest flexibility possible in choosing statistical procedures.The level of measurement used to achieve this is what?

Accepted Answer

A)   Nominal
B)   Ordinal
C)   Interval
D)   Ratio

Question 18

The nurse researcher opts to use interval-level data.The researcher's primary concern will be what?

Accepted Answer

A)   Categories must be mutually exclusive.
B)   Intervals between data categories must be equal.
C)   The rank of zero (0)  represents the absence of the measured variable.
D)   Variance between assigned categories is qualitative rather than quantitative.

Question 19

Which measures of central tendency allow for relative rankings?

Accepted Answer

A)   Mode
B)   Range
C)   Median
D)   Mean
E)   Semiquartile rangeF)  PercentileG)  SD

Question 20

The nurse researcher is interested in describing and summarizing the characteristics of the sample used in the research study.In order for this to occur,the researcher should use what?

Accepted Answer

A)   Inferential statistics
B)   Descriptive statistics
C)   Nonparametric statistics
D)   Mathematical statistics

Exam 16: Quantitative Data Analysis

A measure of death anxiety resulted in a mean score of 5.4 with a standard deviation of 1.6.Where would 34% of the scores fall?

The nurse researcher opts to use a measure of variability.Which measure of variability does the researcher recognize as being most unstable?

A nurse researcher would opt to use factor analysis in which case?

Which measures of central tendency allow for rank ordering with equal intervals?

The alpha level that is interpreted by the nurse researcher as a highly statistically significant result is what?

In a study about how women adjust to living with breast cancer,the youngest participant was 23 years old and the oldest participant was 89 years old.What do these facts represent?

What conclusion can be drawn from statistics that indicate that the average cost of a house in a specific neighbourhood is $150,000,the range is $48,000 to $2,000,000,the median house cost is $98,000,and the mode is $90,000?

The nurse researcher is interested in using nominal level data.The object or event that could be used if nominal-level data are of primary interest is what?

A nurse researcher would opt to use measures of central tendency in which case?

Which characteristic is an essential criterion for categorizing an object,event,or fact as nominal-level data?

The nurse researcher opts to use ratio-level data.The researcher's primary concern will be what?

The nurse researcher's data contain extremes of high and low scores.The measure of central tendency that should be used in order to be least affected by extremes of high and low scores is what?

The nurse researcher is interested in estimating how reliably data can be used to generalize the findings of a study.In order for this to occur,the researcher should use what?

The nurse researcher is using a nursing degree as a variable in a research study.The level of measurement most appropriate in this case is what?

The nurse researcher should report the mean,mode,and median of a variable in a research study in which case?

Which data measurement scales typically use nonparametric tests of significance?

The nurse researcher is interested in having the greatest flexibility possible in choosing statistical procedures.The level of measurement used to achieve this is what?

The nurse researcher opts to use interval-level data.The researcher's primary concern will be what?

Which measures of central tendency allow for relative rankings?

The nurse researcher is interested in describing and summarizing the characteristics of the sample used in the research study.In order for this to occur,the researcher should use what?