You've seen the pattern — here are a few of the actual PYQs.
EPFO2025
The scores of 16 students in a test are as follows : 19, 4, 17, 7, 15, 2, 18, 11, 15, 17, 19, 4, 3, 2, 6, 9. What is the difference between their arithmetic mean and the median ?
- A 1.0
- B 0.8
- C 0.5
- D 0.2
Answer key not yet available (pending official release)
Quantitative Aptitude › Data Sufficiency
EPFO2015
The mean and standard deviation of a set of 16 non-zero positive numbers in an observation are 26 and 3·5 respectively. The mean and standard deviation of another set of 24 non-zero positive numbers without changing the circumstances of both sets of observations, are 29 and 3, respectively. The mean and standard deviation of their combined set of observations will respectively be
- A 27·8 and 3·21 ✓
- B 26·2 and 3·32
- C 27·8 and 3·32
- D 26·2 and 3·21
✓ Correct answer: (A)
Quantitative Aptitude › Data Sufficiency