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Statistical measure that divides a set of observations

Assignment Help Basic Statistics
Reference no: EM132843947

1. A value or measure obtained from a population.

A. Statistics

B. Inferential Statistics

C. Parameter

D. Descriptive Statistics

2. It is the center most value that divides the data into two equal parts.

A. Mean

B. Median

C. Midrange

D. Mode

3. A statistical measure that divides a set of observations into four equal parts.

A. Quartiles

B. Quantiles

C. Percentiles

D. Deciles

4. The following are the ages of the first ten students who enrolled in a certain college.

Find the mean. 23, 21, 18, 17, 19, 21, 20, 18, 19, 24.

A. 19

B. 22

C. 20

D. 21

5. Find the median of the following set of observation. 11,11,13,15,16,17,18,18,19,20.

A. 15

B. 17.5

C. 16.5

D. 15.5

6. Find the mode of the set of observation shown. 15, 13, 13, 14, 17, 17, 18, 12, 17.

A. 13

B. 14

C. 17

D. 15

7. All of these are the properties of median, EXCEPT:

A. It is associated with ordinal data.

B. It is also a unique value in any set of data.

C. It may not exist.

D. Its value is not affected by the extreme values in a set of data.

8. Mark wants to calculate his calculus grade. The teacher's policy is that the tests count 40%, quizzes 20%, homework 10%, projects 15% and the final exam is 15%. If Marks's test average is 92, his quizzes are 95, his homework is 100, projects 90 and final exam is 92, what will his final grade in the class be?

A. 93.6

B. 93.7

C. 93.1

D. 93.8

9. According to percentiles, the median to be measured must lie in the

A. 80th

B. 40th

C. 50th

D. 100th

10. Which one of the following variables is NOT categorical?

A. whether or not an individual has pierced ears

B. religion

C. length of a rattlesnake

D. zip code

11. Gasoline prices (per litre) for the last five days were $0.60, $0.65, $0.70, $0.65, and $0.65. What is the standard deviation?

A. 0.0316

B. 0.001

C. 0.0050

D. 0.0354

12. The following are the scores you shot in five rounds of golf: 70 80 75 75 80. Compute the population standard deviation

A. 3.74

B. 196

C. 14

D. 70

Reference no: EM132843947

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