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1/2/12

statistics, data analysis & decision modeling, 4 or 5th e james r. evans solutions manual and test bank

statistics, data analysis & decision modeling, 4/e james r. evans solutions  manual and test bank

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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