A population has 75 observations. One class interval has a frequency of 15 observations. The relative frequency in this category is:

The relative frequency in this category is 0.2

Step-by-step explanation:

The relative fraquency of a category is given by the number of observations in this category divided by the total number of observations.

In this question:

The category of interest has 15 observations.

In total, the population has 75 observations.

So the relative frequency is:

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry