What are the values of f1 and f2 respectively

• Quant Statistics

Consider the following frequency distribution:

What are the values of f₁ and f₂ respectively?

1. 10 and 17
2. 17 and 10
3. 11 and 16
4. 16 and 11

Answer

The cumulative frequency is the total of a frequency and all frequencies so far in a frequency distribution. It is the "running total" of frequencies.

8 + 10 + f₁ = 29

f₁ = 29 - 18 = 11

Similarly, f₂ = 45 - 29 = 16

The correct option is C.