Linear Regression

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

A person travels by car.  They record their miles driven in a data table.  Calculate the linear regression equation of this data.

• y = 61.93x - 1.79
• y = -1.79x + 61.93
• y = 0.016x + 0.03
• y = 0.03x + 0.016

Which scatter plot shows no relationship?

• Graph A
• Graph B
• Graph C
• Graph D

What is the line of best fit?

• f(x)= 5x+1.82
• cannot be determined
• f(x)= 1.82x + 5.02
• f(x)= 1.1x + 4.2

The chart below tracts starting salaries for health care workers since the year 2000. Using linear regression, find the equation of best fit. Round decimals to 3 places.

• y = 839.721x + 27541.812
• y = 27541.812x - 839.721
• y = 27541.812x + 839.721
• y = 839.721x - 27541.812

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

The scatterplot shows a ​ (a)   correlation.

• positive / strong
• positive / weak
• negative / strong
• negative / weak

What kind of correlation?

• Positive
• Negative
• No

What kind of correlation?

• Positive
• Negative
• No

What kind of correlation?

• Positive
• Negative
• No