STAT 26 Linear Correlation and Simple Linear Regression

Consider the given data. If we plot the scatter diagram of the given data, what do you observe?

• There is a negative relationship between the daily amount of rainfall and the air population removed.

• There is a positive relationship between the daily amount of rainfall and the air population removed.

• There is no relationship between the daily amount of rainfall and the air population removed.

Consider the given data. What is the estimated regression line?

Consider the given data. What is the value of r?

Consider the given data. What percentage of the variation in the amount of particulate removed that is due to changes in daily amount of rainfall?

• 97.86%

• 95.77% 

• 0%

• 25% 

Consider the given data. Estimate the amount of particulate removed when the daily rainfall is 4.8 units.

• 122.84

• 183.52

• 741.58

• 728.94

Consider the given data. Estimate the amount of rainfall when the particulate removed is 111 units.

• 6.67

• -6.67

• -0.68

• 0.68

• -6.35 

• 6.35

• -19.58

• -4.53