Scatterplots

Question 1

Three concepts about scatterplots valuable to know but not explicitly required for the SAT.

Answer 1

SAT practice tests do not explicitly test us on the definition of linearity, strength, and direction

Question 2

What are the direction, strength, and linearity of the following scatterplot:

A) Negative, Strong, Linear
B) Positive, Weak, Linear
C) Positive, Strong, Linear
D) Negative, Weak, Linear

Answer 2

A) Negative, Strong, Linear

Question 3

What are the direction, strength, and linearity of the following scatterplot:

A) None
B) Positive, Weak, Linear
C) Positive, Strong, Linear
D) Negative, Weak, Linear

Answer 3

B) Positive, Weak, Linear

Question 4

What are the direction, strength, and linearity of the following scatterplot:

A) Negative, Strong, Linear
B) Negative, Weak, Linear
C) Positive, Strong, Linear
D) Positive, Weak, Linear

Answer 4

C) Positive, Strong, Linear

Question 5

What are the direction, strength, and linearity of the following scatterplot:

A) None
B) Positive, Strong, Non-Linear
C) Positive, Very Strong, Linear
D) Positive, Weak, Linear

Answer 5

D) Positive, Weak, Linear

Question 6

What are the direction, strength, and linearity of the following scatterplot:

A) Negative, Strong, Non-linear
B) Negative, Weak, Linear
C) Positive, Strong, Non-linear
D) None

Answer 6

A) Negative, Strong, Non-linear

Question 7

What are the direction, strength, and linearity of the following scatterplot:

A) Positive, Strong, Non-linear
B) Negative, Fairly Strong, Linear
C) Negative, Very Strong, Linear
D) Positive, Weak, Linear

Answer 7

B) Negative, Fairly Strong, Linear

Fairly: Moderately/ Reasonably

Question 8

What makes a scatterplot to have a “weak” correlation?

Answer 8

To have several outlier dots (points far from the imaginary line)