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Ryan, Engineer

Category: Calculus and Above

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Experience: B.S. in Civil Engineering

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Question 10
For the given table, make a histogram,

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Question 10

For the given table, make a histogram, then find how many subjects are in the class interval from 9-12. There are 250 total subjects. Educational Level(in Years) Frequency Percent 0-5 15 6 5-8 25 10 8-9 35 14 9-12 _____ 18 12-13 75 30 13-16 30 ______ 16-17 25 10 Answer

75

45

47

35

Question 11

For the histogram that could be created relative to the table in #10, find the height of the block over 13-16. Answer a. 4 b. 0.03 c. 8 d. 3.33

Question 12

For the histogram that could be created relative to the table in #10, find the 23rd percentile. Answer a. 12 b. 8.5 c. 8 d. 5

Question 13

For the histogram that could be created relative to the table in #10, which of the following intervals is the most crowded? Answer a. 12-13 b. 9-12 c. 13-16 d. 8-9

Question 14

For the given list, find the outlier(s): 6, 58, 100, 56, 52, 49, 58, 65, 58, 59 Answer a. there are none b. 100 c. 59 d. 6 e. 6, 100

Question 15

Find the average for: 8, 9, 14, -5, -26, 18, -4 Answer a. 2 b. 3 c. 14 d. 3.5 e. 12

Question 16

For the given set of numbers, find the Standard deviation: 57.9, 78, 96, 0, -14, 15, 3. Answer a. 12.8 b. 43.07 c. 39.88 d. 24.8 e. 33.7

Question 17

For the given list, find the median: 188, 98, 41, 0, 68, 143, 193, 169. Answer a. 115 b. 120.5 c. 112.5 d. 4.5 e. 34

Question 18

Bias is a kind of chance error. Answer a. True b. False

Question 19

Bias in measurement theory is called ____________. Answer a. chance error b. systematic error c. sampling error

Question 20

For a histogram with a long left-hand tail, the median is _______________ than the mean. Answer a. greater b. less c. the same as

Question 21

Bias can be measured by taking the SD of repeated measurements. Answer a. False b. True

Question 22

Find the area under the Normal Curve from -2.5 to 1.1. Answer a. 25.89% b. 82.85% c. 72.87% d. 98.76% e. 12.95%

Question 23

For the women age 18-24 in the HANES2 sample, the average height was about 65.2 inches, and the SD was about 1.9 inches. Estimate the percentage of women with heights above 65 inches. Answer a. 92.03% b. 53.99% c. 7.97% d. 46.02% e. 68.27%

Question 24

The average of a data set is 5 and the SD of the same data set is 1. If I multiply each data point by 3 and then subtract 2 from each data point, what will the new average and SD be? Answer a. Avg=13 SD=3 b. avg=17 SD=17 c. avg=3 SD=-1 d. avg=15 SD=13 e. avg=13 SD=3

Question 25

Sixteen people in a room have an average height of 5'6". A seventeenth person enters the room. How tall would he have to be to raise the average height by one inch? Answer a. 6'5" b. 6'1" c. 5'8" d. 6'2" e. 6"11"

I may find other issues later, but for now can you please check the answer choices for #11 and #12? Is there any possibility that the answer sets got switched around? The answer that I need for #11 is not present in the accompanying choices, but it is in the answers available for #12.

11. I don't have the definitive answer for this one. None of the answer choices are particularly good, and the height of a bar on a histogram is rather arbitrary anyway. If I had to select one, I would go with A. 4, as it is the least objectionable in my opinion.

12. B. 8.5

13. A. 12-13

14. E. 6, 100

15. A. 2

16. C. 39.88

17. B. 120.5

18. B. False

19. B. systematic error

20. A. greater

21. A. False

22. The actual value should be 85.91%. Answer B is the closest.

23. The answer that I got was 54.19%. Answer B is the closest.

24. E. Avg = 13, SD = 3

25. E. 6' 11"

Thanks,

Ryan

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