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Unformatted text preview: ble 31. In order to improve the quality of products and services, we must remove the root causes
of process _____.
A. inference
B. variation
C. capability
D. changes 32. Any characteristic of a population is called a _____.
A. set
B. process
C. variable
D. census 16 Chapter 01  An Introduction to Business Statistics 33. The goal of _____ is to stabilize and reduce the amount of process variation.
A. Statistical Process Control
B. census taking
C. random sampling
D. statistical analysis 34. A _____ is an examination of all the units in a population.
A. random sampling with replacement
B. random sampling without replacement
C. statistical inference
D. census 35. _____ is the difference between a numerical description of the population and the
corresponding description of the sample.
A. Variability
B. Statistical inference
C. Sampling error
D. Measurement error 36. A _____ is a list of all the units in a population.
A. census
B. frame
C. sample
D. variable 37. The process of assigning a value of a variable to each unit in a population or sample is
called _____.
A. sampling
B. measurement
C. Statistical Process Control
D. observational analysis 17 Chapter 01  An Introduction to Business Statistics 38. A ____ is a display of individual process measurements versus time.
A. runs plot
B. statistical analysis
C. random sample
D. measurement 39. Statistical _____ refers to using a sample of measurements making generalizations about
the important aspects of a population.
A. sampling
B. process control
C. analysis
D. inference 40. A _____ is a subset of the units in a population.
A. census
B. frame
C. sample
D. variable 41. A _____ variable can have values that are numbers on the real number line.
A. qualitative
B. quantitative
C. random
D. nominative 42. A sequence of operations that takes inputs and turns them into outputs is a _____.
A. process
B. statistical analysis
C. runs plot
D. random sampling 18 Chapter 01  An Introduction to Business Statistics 43. A _____ variable can have values that indicate into which of several segments of a
population it belongs.
A. qualitative
B. quantitative
C. ratio
D. interval 44. A set of existing units we wish to study is called a _____.
A. sample
B. frame
C. census
D. 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 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 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 19 Chapter 01  An Introduction to Business Statistics 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 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 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 51. A consumer's yes/no reply to a survey question is what type of variable?
A. Qualitative
B. Ratio
C. Random
D. Quantitative 52. The change in daily price of a stock is what type of variable?
A. Qualitative
B. Ordinal
C. Random
D. Quantitative 110 Chapter 01  An Introduction to Business Statistics 53. ______ is a type of sampling method.
A. Systematic
B. Experimental
C. Observational
D. Process 54. In a voluntary response sample, what types of opinions are usually expressed?
A. Impartial
B. Random
C. Strong
D. Crosssectional 111 Chapter 01  An Introduction to Business Statistics Chapter 01 An Introduction to Business Statistics Answer Key True / False Questions 1. A population is a set of existing units.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Population 2. If we examine some of the population measurements, we are conducting a census of the
population.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Population 112 Chapter 01  An Introduction to Business Statistics 3. A random sample is selected so that on each selection from the population every unit
remaining in the population has an equal chance of being chosen.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Sample 4. A process is in statistical control if it does not exhibit any unusual variations.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Process/Statistical Control 5. An example of a quantitative variable is the make of a car.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Easy
Topic: Variable 6. An example of a qualitative variable is the mileage of a car.
FALSE AACSB: Reflective Thinki...
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This document was uploaded on 01/20/2014.
 Winter '14

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