MHT CET 2024 Mathematics question
If for some , the frequency distribution of the marks obtained by 20 students in a test is Marks : 2, 3, 5, 7 Frequency: , , , then the mean of the marks is
Answer: (C)
Solution
The frequencies must sum to 20: , so or . Frequencies cannot be negative: gives , so it is rejected and . Frequencies for marks 2, 3, 5, 7 are
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account