Calculating Line of Best Fit and Linear Regression

What is the equation of the line of best fit?

• y = -25x + 170
• y = -5/8x + 170
• y = 25x + 170
• y = 5/8x + 170

What is the line of best fit?

• y = 5/3x + 375
• y = 1/3x + 475
• y = 5/3x + 3
• y = 1/3x + 375

Based on the trend line, about how many guests should be expected if the temperature is around 80 degrees?

• 8,300
• 7,300
• 8
• 9,300

Use the line of best fit to approximate rate of change relative to the scatter plot above.

• 7/5
• 5/7
• -7/5
• -5/7

What is the equation of the line of best fit?

• y = 1/2x + 3
• y = 1/40x 
• y = 1/2x + 15
•  y = 1/40x + 15

What is the correlation between the x and y variables?

• y increases as x increases
• y is constant
• y decreases as x decreases
• y descreases as x increases

Predict the grade of a student that has 7 absences.

• 50
• 45
• 70
• 60

What is the equation of the line of best fit?

• y = 3/2x
• y = 30x
• y = 30x + 300
• y = 3/2x + 300

What is the equation of the line of best fit?

• y = 750x + 9500

• y = -750x + 11000

• y = 3/4x + 11

• y = -3/4x + 11000

What is the best prediction for the number of candies in the jar when 30 students visit her?

• 90
• 180
• 135
• 150