General Statistics Past Questions
Question 1
The average salary of a group of unskilled workers is 10,000 and for a group of skilled workers is 15,000. Combines salary is 12,000. What is the percent of skilled workers?
- A. 40%
- B. 50%
- C. 60%
- D. None of these
Question 2
The averages are affected by change of:
- A. Origin
- B. Scale
- C. Origin and Scale
- D. None of Above
Question 3
When the values in a series are not of equal importance, we calculate the:
- A. Arithmetic mean
- B. Geometric mean
- C. Weighted mean
- D. Mode
Question 4
Which partition value divides the series into two equal parts.
- A. P10
- B. P5
- C. P50
- D. P90
Question 5
The distribution of the difference of proportions approximates the normal standard distribution only if:
- A. \( n \geq 30 \)
- B. \( n < 30 \)
- C. \( n \geq 50 \)
- D. \( n = 50 \)
