Question

what kind of trend is shown by an upward line on a scatter plot?
a. no association
b. positive association
c. random association
d. negative association

Explanation:

Step1: Understand scatter plot trends

A scatter plot shows relationships.

Step2: Analyze upward line

An upward line means as one variable increases, the other does too. This is a positive association.
A no - association (a) would have no clear pattern. A random association (c) is not a standard term for this context. A negative association (d) would have a downward line.

Answer:

B. Positive association