Question

To predict what diameter a child would draw a nickel given family income, it would be most appropriate to: ___________

a. Use the regression equation
b. Use the mean y-value
c. Use the P-Value
d. Use the residual

Answer 1

a. Use the regression equation

Explanation:

Given

See attachment for missing part of question

Required

What can be used to predict diameter, given family income

We can see (by observation) that the data on the table can only be represented on a scattered plot, and scattered plot uses regression equation for data prediction.

i.e.
`y = mx + b` --- equation of line of best fit

In this case;

`x \to income`

`y \to diameter`

When the x value (income) is known, we can simply plug in the value in the above equation to get the y value (diameter)