Which of the following indexes involves the calculation of deviation scores (x)? a. Range b. IQR c. SD (standard deviation) d. Median

Review Questions from Prerequisite
Material
Instructions:Highlight the correct answer

1.
Statistical skills can play an important role
in nursing because they help nurses to:
a. Calculate appropriate doses and clinical measurements
b. Generate clinical questions
c. Evaluate and
generate research evidence for nursing practice
d. Make better use of computers and the Internet

2. An example of a variable is:
a.
Systolic blood pressure
b. Pi (?)
c. 52.5 kilograms
d. Number of seconds in a minute

3. Which
of the following is nota component
of a research question?
a. An independent variable
b. A population
c. A sample
d. A dependent variable

4. Identify the dependent variable in the
following: In elderly men, what is the effect of
chronic fatigue on level of
depression?
a. Age
b. Sex
c. Chronic fatigue
d. Depression

5. Which of the following is a continuous (vs.
discrete) variable?
a. Number of pages in a book
b. Age
at death
c. Falls during hospitalization
d. Number of times married

6. The measurement level that classifies
attributes, indicates magnitude, and has equal
intervals between values, but does
not have a rational zero, is:
a. Nominal
b. Ordinal
c. Interval
d. Ratio

7. The measurement
level that is sometimes called categorical
or qualitativeis:
a. Nominal
b. Ordinal
c. Interval
d. Ratio
8. It is not
meaningful to calculate an arithmetic average with data from which of the
following?
a. Nominal measures
b. Ordinal measures
c. Nominal
and ordinal measures
d. All measures can be meaningfully averaged.

9. Degree of pain
measured as none, a little, or a lot is measured on which of the
following
scales?
a. Nominal
b. Ordinal
c. Interval
d. Ratio

10.
Body temperature is measured on which of the following scales?
a. Nominal
b. Ordinal
c.
Interval
d. Ratio

11. Type of birth (vaginal
or cesarean) is measured on the:
a. Nominal
scale
b. Ordinal scale
c. Interval scale
d. Ratio scale

12.
Which of the following is a ratio-level
measure?
a. Dietary
cholesterol intake (mg)
b. Cognitive impairment on a 50-item scale
c. Pain on a 10-point scale
d. Military rank

13.
Ratio-level measures are different than
any other level by virtue of which property?
a. Classification
b. Equal intervals between values
c. A
true, rational zero
d. Indication of magnitude

14.
Researchers typically collect data from
a ________ and hope to generalize their results
to a _____________. (Fill in the
blanks.)
a. Population, sample
b. Statistic, parameter
c. Sample, statistic
d. Sample,
population

15.
If the average amount of sleep for all
people in the United States was 7.6 hours per night,
this average would be a _________ of the population of U.S. residents.
(Fill in the
blank.)
a. Variable
b. Parameter
c.
Statistic
d. Datum

16.
If a nurse researcher measured the
anxiety level of 100 hospitalized children, the
children’s average score on an
anxiety scale would be a:
a. Variable
b. Parameter
c. Statistic
d. Operational definition

17.
Statistical methods that are used to
draw conclusions about a population are called:
a. Inferential
statistics
b. Descriptive statistics
c. Univariate statistics
d. Multivariate statistics

18.
Which of the following variables is most
likely to be negatively skewed in a general
population?
a. Number of times arrested
b. Age at retirement
c. Number of times married
d. Age at birth

19.
A normal distribution is not:
a. Skewed
b. Leptokurtic
c. Platykurtic
d. All of the above

The next eight questions pertain to the following table
(Table 2):

Table 2

Number of Pregnancies of Study Participants

Frequency

Percentage

Cumulative Percentage

0

24

11.1

11.1

1

29

13.5

24.6

2

78

36.3

60.9

3

46

21.4

82.3

4

22

10.2

92.5

5

11

5.1

97.6

6

4

1.9

99.5

7

1

0.4

100.0

Total

215

100.0

20. In Table 2, the variable is _______
and the measurement level is _________.
(Fill in
the blanks.)
a. Discrete, interval
b.
Discrete, ratio
c. Continuous, interval
d. Continuous, ratio

21.
In Table 2, the value of n is:
a. 24
b. 100.0
c. 215
d. 7

22.
In Table 2, the cumulative relative
frequency for five or fewer pregnancies is:
a. 210
b. 199
c. 92.5
d. 97.6

23.
The best way to graph information in
Table 2 would be to construct:
a. A
histogram
b. A pie chart
c. A bar graph
d. Either a pie chart or a bar graph

24.
In Table 2, the distribution of data
would be described as:
a. Symmetric
b. Positively
skewed
c. Negatively skewed
d. It cannot be determined.

25.
In Table 2, the distribution of data
would be described as:
a. Unimodal
b. Bimodal
c. Multimodal
d. It cannot be determined.

26.
In Table 2, the most likely number to be an outlier is:
a. 0
b. 1
c. 7
d. 24

==================================================================

27. Central tendency indexes are all of the
following except which of the
following
statements?
a. They are descriptive statistics.
b. They summarize how dispersed a set of scores is.
c. They provide
information about a value around which scores cluster.
d. They are appropriate for interval- and ratio-level
measures.

28.
In the following distribution (10 11
12 13 14 15 15
15 15) the mode is:
a. 11
b. 12
c. 14
d. 15

29.
In the following distribution (10 11
12 13 14
15 15 15 15)
the median is:
a. 11
b. 12
c. 14
d. 15

30.
The median is all of the following except:

a. The 50th percentile
b. The point that divides a distribution in half
c. Q2
d. The
most popular score in the distribution

31.
In which type of distribution is the
mean a higher value than the median or mode?
a. A leptokurtic
distribution
b. A positively skewed distribution
c. A negatively skewed distribution
d. A normal distribution

32.
If there are outliers at either end of a distribution that is symmetric, a
researcher might:
a. Calculate a trimmed mean
b. Report the median rather than the mean
c. Report the mode rather than the mean
d. Omit the variable from further analyses

33.
Which of the following indexes of
dispersion is notin the original
units of measurement
of the variable?
a. Range
b. Interquartile
range
c. Standard deviation
d. Variance

34.
Which of the following indexes involves
the calculation of deviation scores (x)?
a. Range
b. IQR
c. SD (standard deviation)
d. Median

35.
Which of the following indexes involves
the calculation of percentiles?
a. z
b. IQR
c. SD
d. Mean

36.
What percentage of cases for a normally
distributed variable lies within 1 SDabove
and
below the mean?
a. 34%
b. 50%
c. 68%
d. 95%

37.
In calculating standard scores
(z-scores), which two descriptive statistics are needed?
a. Median, IQR
b. Median, percentiles
c. Mean, Range
d. Mean,
SD

38.
A z
score of 0.00 corresponds to an original score that:
a. Could not be used in the calculation of the mean
b. Is the same as the mean in the original distribution
c. Is
the lowest score in the original distribution
d. Is an outlier

39.
A z
score of -1.00 corresponds approximately to a score for a normally
distributed
variable that is at the:
a. 1st percentile
b. 10th percentile
c. 16th percentile
d. 84th percentile

Questions
40 through 43 pertain to the following table (Table 3):

Table 3
Characteristics
of Chemotherapy Patients (N=100)

Characteristic

Mean (SD)

Median

Age (years)

48.9 (9.8)

47.0

Body mass index (BMI) (kg/m2)

27.0 (6.0)

25.1

Number of positive nodes

3.4 (2.9)

2.0

Dose of cyclophosphamide (mg)

1063.0 (477.0)

1250.0

Dose of doxorubicin (mg)

125.0 (53.0)

125.0

Degree of nausea, 0-100 scale

52.1 (25.0)

52.0

40.
Refer to Table 3. For the variable body
mass index,the variance is:
a. 27.0
b. 27.02
c. 6.0
d. 36.0

41.
Refer to Table 3. For the variable number
of positive nodes,the statistics suggest that the
distribution is:
a. Positively
skewed
b. Negatively skewed
c. Symmetric
d. Normal

42.
Refer to Table 3. Assume that the distribution for the variable degree of nauseais
normally distributed. In such a
case, out of the 100 sample members, approximately how
many gave a nausea rating of 77 or
higher?
a. 0
b. 3
c. 16
d. 34

43.
Refer to Table 3. Which variable in Table 3 is most likely to be negatively
skewed?
a. Age
b. Body mass index
c. Dose of
cyclophosphamide
d. Dose of doxorubicin

44.
Refer to Table 3. For the variable body
mass index,what would be the standard score for
a person whose BMI was 21.0?
a. -1.0
b. 0.0
c. 1.0
d. 2.0

45. Another name for a crosstab
table is a:
a. Scatterplot
b. Frequency distribution
c. Contingency
table
d. Relative risk table

46. In a 4 X 3 contingency table, how many
variables would there be?
a. 2
b. 4
c. 7
d. 12

47.
In a 4 X 3 contingency table, how many
cells would there be?
a. 2
b. 4
c. 7
d. 12

48.
Which measurement scale(s) are most
amenable to cross-tabulation?
a. Nominal only
b. Nominal and ordinal
c. Nominal, ordinal, and interval
d. Nominal, ordinal,
interval, and ratio

49.
A widely reported and intuitively appealing risk index for comparing risk
outcomes is:
a. Relative risk (RR)
b. Absolute risk (AR)
c. Odds
ratio (OR)
d. Number needed to treat (NNT)

PLACE THIS ORDER OR A SIMILAR ORDER AND GET HELP FROM A REGISTERED NURSE:)

Click the button below to order this paper AND ENJOY OUR DISCOUNT.

The post Which of the following indexes involves the calculation of deviation scores (x)? a. Range b. IQR c. SD (standard deviation) d. Median appeared first on Premium Nursing Papers.