Question

If the formula in the picture below were used to find the r-value of the following data, what would be the value of ¥?

Answer 1

option C

ȳ = 9

Explanation:

ȳ (yBar) is used to represent mean value of y

Mean, which is the average score of the population on a given variable

It is represented by = ( Σ Xi ) / N

There are two steps to calculate mean value

1. Add the numbers

sum of all numbers = 3 + 7 + 8 + 11 + 16

= 45

2. Divide by how number of ys (there are 5 numbers)

45 / 5 = 9

So ȳ = 9