OWL : MOS 2242B 550 FW23 : Tests & Quizzes
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OWL : MOS 2242B 550 FW23 : Tests & Quizzes
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Tests & Quizzes
Quiz 1
Return to Assessment List
Part 1 of 2 2.0 / 3.0 Points
Question 1 of 8
0.5
0.5 Points
In a frequency distribution, the suggested number of classes to represent 29 observations is:
5
Answer Key: 5
Question 2 of 8
0.5
0.5 Points
Given the following frequency distribution, compute the corresponding less-than cumulative frequency distribution.
GRADE
FREQUENCY
CUMULATIVE FREQUENCY
0 to 50
5
5
51 to 70
0
5
71 to 80
10
15
81 to 90
7
22
91 to 100
2
24
Answer Key: 5, 5, 15, 22, 24
Question 3 of 8
0.5
0.5 Points
Given the following frequency distribution
2024-01-26, 3
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OWL : MOS 2242B 550 FW23 : Tests & Quizzes
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AGE in years
18
19
20
21
22
FREQUENCY
9
6
5
2
8
The mean age (rounded to 2 decimal places) is
19.8
Answer Key: 19.8
Question 4 of 8
0.0
0.5 Points
The population of a village is measured for 5 consecutive years:
YEAR
2017
2018
2019
2020
2021
POPULATION
355
488
438
408
544
The average growth rate in the 5-year period (rounded to 2 decimal places) is:
8.91
Answer Key: 0.11
Feedback: Since the request is an average RATE OF GROWTH, you have to use the geometric mean
Question 5 of 8
0.5
0.5 Points
The range of the following dataset is
41
59
18
28
21
39
29
Answer Key: 41
Question 6 of 8
0.0
0.5 Points
A data distribution with mean (-41.71) and standard deviation 1 is given. What is the minimum percentage of data lying between (-41.71)-1.5*1
and (-41.71)+1.5*1?
86.64 % Answer Key: 55.56
Feedback: You may want to review Chebyshev's Theorem
Part 2 of 2 0.5 / 1.0 Points
2024-01-26, 3
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OWL : MOS 2242B 550 FW23 : Tests & Quizzes
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Question 7 of 8
0.5
0.5 Points
What type is the variable "final grade"? [please disregard special grades like SPC, PAS, FAI, etc.]
A. Quantitative discrete
B. Qualitative nominal
C. Quantitative continuous
D. Qualitative
Answer Key: A
Feedback: Final grades are integers.
Question 8 of 8
0.0
0.5 Points
What type of variable is "favourite drink"?
A. Nominal
B. Qualitative
C. Quantitative continuous
D. Quantitative discrete
Answer Key: B
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