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Unformatted text preview: ___.
A. sample
B. frame
C. census
D. population AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Population 45. _____ refers to describing the important aspects of a set of measurements.
A. Statistical Process Control
B. Runs plot
C. Descriptive statistics
D. Times Series plot AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Descriptive Statistics 126 Chapter 01  An Introduction to Business Statistics 46. In situations when it is not possible to number all of the units in a population, we often use
a _____ sample to approximate a random sample.
A. random with replacement
B. systematic
C. random without replacement
D. statistical AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sample 47. A runs plot with an erratic pattern would indicate that the process is _____.
A. in control
B. out of control
C. random
D. fluctuating AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Process/Statistical Control 48. If a unit is placed back into the population after being selected for a sample, we are
sampling _____.
A. without replacement
B. during replacement
C. with replacement
D. consistently AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sample 127 Chapter 01  An Introduction to Business Statistics 49. A _____ is used to help select items for a random sample.
A. runs plot
B. qualitative variable
C. ratio variable
D. random number table AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Sample 50. A process that is in statistical control does not necessarily imply that the process is
__________.
A. statistically random
B. using a quantitative variable
C. observational
D. capable AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Hard
Topic: Process/Statistical Control 51. A consumer's yes/no reply to a survey question is what type of variable?
A. Qualitative
B. Ratio
C. Random
D. Quantitative AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Variable 128 Chapter 01  An Introduction to Business Statistics 52. The change in daily price of a stock is what type of variable?
A. Qualitative
B. Ordinal
C. Random
D. Quantitative AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Variable 53. ______ is a type of sampling method.
A. Systematic
B. Experimental
C. Observational
D. Process AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sample 54. In a voluntary response sample, what types of opinions are usually expressed?
A. Impartial
B. Random
C. Strong
D. Crosssectional AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Hard
Topic: Sample 129 Chapter 01  An Introduction to Business Statistics Chapter 02
Descriptive Statistics: Tabular and Graphical Methods
True / False Questions 1. A stemandleaf display is a graphical portrayal of a data set that shows the data set's
overall pattern of variation.
True False 2. The relative frequency is the frequency of a class divided by the total number of
measurements.
True False 3. A bar chart is a graphic that can be used to depict qualitative data.
True False 4. Stemandleaf displays and dot plots are useful for detecting outliers.
True False 5. A scatter plot can be used to identify outliers.
True False 6. When looking at the shape of the distribution using a stemandleaf, a distribution is
skewed to the right when the left tail is shorter than the right tail.
True False 7. When we wish to summarize the proportion (or fraction) of items in a class we use the
frequency distribution for each class.
True False 130 Chapter 01  An Introduction to Business Statistics 8. When establishing the classes for a frequency table it is generally agreed that the more
classes you use the better your frequency table will be.
True False 9. The sample cumulative distribution function is nondecreasing.
True False 10. A frequency table includes row and column percentages.
True False Multiple Choice Questions 11. A(n) ______ is a graph of a cumulative distribution.
A. Histogram
B. Scatter plot
C. Ogive plot
D. Pie Chart 12. ________ can be used to study the relationship between two variables.
A. Crosstabulation tables
B. Frequency tables
C. Cumulative frequency distributions
D. Dot plots 13. Row or column percentages can be found in:
A. Frequency tables
B. Relative frequency tables
C. Crosstabulation tables
D. Cumulative frequency tables 131 Chapter 01  An Introduction to Business Statistics 14. All of the following are used to describe quantitative data except the
A. Histogram
B. Stem and Leaf
C. Dot Plot
D. Pie Chart 15. An observation separated from the rest of the data is a(n)
A. Absolute extreme
B. Outlier
C. Mode
D. Quartile 16. Which of the following graphs is for qualitative data?
A. Histogram
B. Bar Chart
C. Ogive plot
D. Stem and leaf 17. A plot of the values of two variables is a _____ plot.
A. Runs
B. Scatter
C. Dot
D. Ogive plot 18. A Stem and Leaf display is best used to
A. Provide a point estimate of the variabilit...
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This document was uploaded on 01/20/2014.
 Winter '14

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