Association Correlation

Guess the correlation

• .88
• -.48
• -.73
• -.87

• r = .81
• r = .51
• r = .42
• r = -.50

Which plot shows stronger r-value?

• top plot
• bottom plot

• r = .44
• r = .16
• r = -.67
• r = -.78

Which plot shows weaker correlation?

• top plot is weaker
• bottom plot is weaker

• r = .84
• r = .52
• r = .36
• r = -.59

• r = .84
• r = .52
• r = .36
• r = -.59

Which plot has r-value closer to negative one?

• plot on left
• plot on right
• neither, both plots have equal r-values

What direction of association do you expect between these variables: "Ice cream sales" and "outdoor temperature"

• positive association
• virtually NO association
• negative association

What direction of association do you expect between these variables: "Hot cocoa sales" and "outdoor temperature"

• positive association
• virtually NO association
• negative association