Question

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

what does a scatter plot help visualize?
a. the range of a data set
b. the relationship between two variables
c. the sum of data points
d. the average of a data set

Explanation:

For the first question, in a scatter plot, an upward - sloping line means that as one variable increases, the other variable also increases, which is a positive association. For the second question, the main purpose of a scatter plot is to show the relationship (correlation) between two variables.

Answer:

First question: d. Positive association
Second question: b. The relationship between two variables