Exploring Associations in Statistics

What is a scatter plot used for?

• To display images

• To display textual data

• To display numerical data

• To display categorical data

What type of data is required for a scatter plot?

• Bivariate numerical data

• Image data

• Textual data

• Categorical data

In Susie's scatter plot example, what are the two variables?

• Number of items purchased and total amount of money spent

• Number of items purchased and age of shoppers

• Total amount of money spent and age of shoppers

• Number of items purchased and number of shoppers

How many shoppers did Susie survey in her example?

• 16

• 14

• 12

• 10

What type of association is it when both variables increase together?

• Positive association

• Inverse association

• No association

• Negative association

Which type of association occurs when one variable increases and the other decreases?

• Positive association

• Negative association

• No association

• Direct association

What does it mean if a scatter plot shows no clear pattern or trend?

• No association

• Strong association

• Positive association

• Negative association

What is indicated by data points that are close together in a scatter plot?

• No association

• Strong association

• Weak association

• Negative association

If a scatter plot shows a curved trend, what type of relationship is it?

• Linear

• Nonlinear

• Positive

• Negative

What type of association would you expect between the number of absences a student has and their GPA?

• Negative association

• Strong association

• Positive association

• No association