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Unformatted text preview: ble) with sample data is that:
A. Calculations involving central tendency and variation are more complicated than central
tendency and variation calculations based on ungrouped data.
B. The descriptive statistics are less precise than the descriptive statistics obtained using
ungrouped data.
C. The interpretation of the grouped data descriptive statistics is meaningless.
D. It is much more difficult to summarize the information than it is with the ungrouped data. AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Grouped Data 25. When using the Chebyshev's theorem to obtain the bounds for a 99.73 percent of the
values in a population, the interval generally will be ___________ the interval obtained for
the same percentage if normal distribution is assumed (empirical rule).
A. Shorter than
B. Wider than
C. The same as AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Hard
Topic: Chebyshev's Theorem 26. A quantity that measures the variation of a population or a sample relative to its mean is
called the
A. Range
B. Standard deviation
C. Coefficient of variation
D. Variance
E. Interquartile range AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Variability 1173 Chapter 01  An Introduction to Business Statistics 27. As a measure of variation, the sample _________ is easy to understand and compute. It is
based on the two extreme values and is therefore a highly unstable measure.
A. Range
B. Standard deviation
C. Variance
D. Interquartile range
E. Coefficient of variation AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Variability 28. In a statistic class, 10 scores were randomly selected with the following results were
obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66
What is the mean?
A. 71.5
B. 72.0
C. 77.0
D. 71.0
E. 73.0 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 29. In a statistic class, 10 scores were randomly selected with the following results were
obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66
What is the median?
A. 71.5
B. 72.0
C. 77.0
D. 71.0
E. 73.0 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 1174 Chapter 01  An Introduction to Business Statistics 30. In a statistic class, 10 scores were randomly selected with the following results were
obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66
What is the mode?
A. 71.5
B. 72.0
C. 77.0
D. 71.0
E. 73.0 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 31. In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are:
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68
What is the mean?
A. 70
B. 75
C. 68
D. 71
E. 80 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 32. In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are:
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68
What is the median?
A. 70
B. 75
C. 68
D. 71
E. 80 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 1175 Chapter 01  An Introduction to Business Statistics 33. In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are:
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68
What is the mode?
A. 70
B. 75
C. 68
D. 71
E. 80 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 34. The company financial officer was interested in the average cost of PCs that had been
purchased in the past six months. A random sample of the price of 10 computers was taken
with the following results: $3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120,
$3,009, $4,000
What is the mean?
A. 3447
B. 3213
C. 3250
D. 6120
E. 3445 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 1176 Chapter 01  An Introduction to Business Statistics 35. The company financial officer was interested in the average cost of PCs that had been
purchased in the past six months. A random sample of the price of 10 computers was taken
with the following results: $3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120,
$3,009, $4,000
What is the median?
A. 3447
B. 3213
C. 3250
D. 6120
E. 3445 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 36. The company financial officer was interested in the average cost of PCs that had been
purchased in the past six months. A random sample of the price of 10 computers was taken
with the following results: $3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120,
$3,009, $4,000
What is the mode?
A. 3447
B. 3213
C. 3250
D. 6120
E. 3445 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Central Tendency 1177 Chapter 01  An Introduction to Business Statistics 37. The local amusement park was interested in the average wait time at their most popular
roller coaster at the peak park time (2 p.m.). They se...
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