Statistics
Data Analysis & Decision Modeling 5e James Evans Solutions Manual And Test
Bank
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Statistics, Data Analysis, and Decision Modeling, 5e
(Evans)
Chapter 2
Descriptive Statistics and Data Analysis
1)
________ refers to a collection of quantitative measures and ways of describing
data.
A)
Statistical inference
B)
Descriptive statistics
C)
Frequency distribution
D)
Categorical data
Answer: B
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Categorical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
2)
All of the following are examples of measures of central tendency except
________.
A)
mean
B)
median
C)
standard deviation
D) mode
Answer: C
Diff: 1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
3)
All of the following are examples of measures of dispersion except
________.
A) range
B) variance
C) standard deviation
D) mode
Answer: D
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
4)
In Microsoft Excel 2010, the function that computes the standard deviation of a
set of data, assumed to be a sample, is ________.
A)
STDEV.P(data range)
B)
MODE.SNGL(data range)
C)
STAND.MULT(data range)
D)
STDEV.S(data range)
Answer: D
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
5)
In Microsoft Excel 2010, the function that computes the standard deviation of a
set of data, assumed to be a population, is ________.
A)
STDEV.S(data range)
B)
STAND.SNGL(data range)
C)
STDEV.P(data range)
D)
STAND.MULT(data range)
Answer: C
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
6)
In Microsoft Excel 2010, the function that computes the single most frequently
occurring value in a set of data is ________.
A)
MEDIAN(data range)
B)
MODE.SNGL(data range)
C)
STDEV.P(data range)
D)
SKEW(data range)
Answer:
B
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
7)
Using Microsoft Excel 2010, the function that computes the most frequently
occurring values of a set of data is ________.
A)
MODE.SNGL(data range)
B)
MEDIAN(data range)
C)
STDEV.P(data range)
D)
MODE.MULT(data range)
Answer: D
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
8)
A table that shows the number of observations in each of several nonoverlapping
groups is called a ________.
A)
frequency distribution
B)
scatter plot
C)
histogram
D)
chart
Answer: A
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
9)
The sum of relative frequencies will always equal ________.
A)
100
B)
1.0
C)
10
D)
0.01
Answer: B
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
10)
A graphical depiction of a frequency distribution for numerical data in the
form of a column chart is called a ________.
A)
scatter plot
B)
box-and-whisker plot
C)
pie chart
D)
histogram
Answer: D
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
11)
The proportion of the total sample that falls at or below the upper limit value
is represented by ________.
A)
dispersion
B)
cumulative relative frequency
C)
median
D)
standard deviation
Answer: B
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
12)
The ________ is a value at or below which at least k percent of the
observations lie.
A)
kth percentile
B)
kth ratio
C)
kth quartile
D)
kth mean
Answer: A
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
13)
The formula to calculate kth percentile is given by ________.
A)
100/Nk + 0.05
B)
100/Nk - 0.05
C)
Nk/100 + 0.05
D)
Nk/100 - 0.05
Answer: C
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
14)
________ is the quartile representing the 25th percentile.
A)
Q1
B)
Q2
C)
Q3
D)
Q4
Answer: A
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
15)
________ is the quartile representing the 50th percentile.
A)
Q1
B)
Q2
C)
Q3
D)
Q4
Answer: B
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
16)
________ is the quartile representing the 75th percentile.
A)
Q1
B)
Q2
C)
Q3
D)
Q4
Answer: C
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
17)
________ is the quartile representing the 100th percentile.
A)
Q1
B)
Q2
C)
Q3
D)
Q4
Answer: D
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
18)
One-fourth of the data falls below the ________ quartile.
A)
fourth
B)
second
C)
first
D)
third
Answer: C
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
19)
Three-fourths of the data fall below the ________ quartile.
A)
fourth
B)
second
C)
first
D)
third
Answer: D
Diff:
1
Blooms: Remember
Topic: Frequency Distributions, Histograms, and Data
Profiles
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
20)
The ________ is the sum of all observations divided by the number of
observations.
A)
arithmetic mean
B)
median
C)
mode
D)
midrange
Answer: A
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
21)
The ________ is the middle value when the data are arranged from smallest to
largest.
A)
mode
B)
median
C)
midrange
D)
arithmetic mean
Answer: B
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
22)
The ________ is the observation that occurs the most frequently in the data
set.
A)
arithmetic mean
B)
median
C)
mode
D)
midrange
Answer: C
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
23)
The ________ is the average of the largest and smallest values in the data set.
A)
arithmetic mean
B)
median
C)
mode
D)
midrange
Answer: D
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
24)
An observation that is radically different from the rest is called ________.
A)
the median
B)
the mean
C)
an outlier
D)
the mode
Answer: C
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
25)
The population mean is represented by ________.
A)
α
B)
μ
C)
λ
D)
π
Answer: B
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
26)
The sample mean is represented by ________.
A)
B)
α
C)
μ
D)
η
Answer: A
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
27)
The midrange for a data set containing all the values between 50 and 67 is
________.
A)
67
B)
58.5
C)
50
D)
-17
Answer: B
Diff:
2
Blooms: Apply
AACSB: Analytic Skills
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
28)
The degree of variation in or the numerical spread of the data is known as
________.
A) quartile
B) median
C) dispersion
D)
mean
Answer: C
Diff:
1
Blooms: Remember
Topic: Descriptive Statistics for Numerical Data
Learning
Outcome: Compare and contrast methods of
summarizing and describing data
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