Question

Outliers are usually?

Easy to spot on a scatter plot

Hard to spot on a scatter plot

Not meant to be included on a scatter plot

The last three data points to the right

A positive straight line relationship:

Shows that as the values of y increase, the values of x decrease

Shows that as the values of x increases, the values of y decreases

Shows that as the values of y decreases, the values of x remain constant

Shows that as the values of x increase, the values of y increase

The independent variable is also known as the response variable.

True

False

Once we have a simple regression line, we can use it to predict values for the independent variable X.

True

False

Answer 1

1) Outliers are usually easy to spot on a scatter plot.

2) A positive straight line relationship shows that as the value of x increase, the value of y increase.

3) False. The statement that the independent variable is also known as the response variable is incorrect. An independent variable is given the value which is decided by the experimenter. The dependent variable whose value depends on the independent variable is known as the response variable.

4) It is true that once we have a simple regression line, we can use it to predict values for the independent variable X, provided we are given the corresponding value of the dependent variable Y.