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Title: MTH410 - Module 2 - B - Check Your Understanding
Type: Fill in the blank
Instructions: Global Engineers hired the following number of Class 1 engineers during the first six
months of the past year. (Assume the data represent a sample.)
Month
January
February
March
April
May
No. of Class 1
Engineers Hired
3
2
4
2
6
Question: 1. Determine the mean, the median, the mode, and the range for the above data.
Correct Answer: Mean = 2.833 Median = 2.5 Mode = 2.0 Range = 6
Correct Feedback: That’s correct!
Incorrect Feedback: The correct answer is: Mean = 2.833
Median = 2.5
Mode = 2.0
Range = 6
Question: 2. Compute the variance and the standard deviation.
Correct Answer: S2 = 4.166 S = 2.041
Correct Feedback: That’s correct!
Incorrect Feedback: The correct answer is: S2 = 4.166 S = 2.041
Question: 3. Compute the first and the third quartiles.
Correct Answer: First quartile = 2 Third quartile = 4
Correct Feedback: That’s correct!
Incorrect Feedback: The correct answer is: First quartile = 2 Third quartile = 4
Question: 4. Compute the z-scores for the months of May and June.
Correct Answer: Z-score for May = 1.55 (rounded) Z-score for June = -1.39 (rounded)
Correct Feedback: That’s correct!
Incorrect Feedback: The correct answer is: Z-score for May = 1.55 (rounded) Z-score for June = -1.39
(rounded)
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