Scatter Plots and Lines of Fit

Scatter Plots and Lines of Fit

By Omar Shishani

Open Ended

What does correlation means?

Multiple Choice

The graph shows the number of mail-order prescriptions. Determine whether the graph shows a positive correlation, a negative correlation, or no correlation.

• positive correlation

• negative correlation

• no correlation

Multiple Choice

The graph shows the average number of students per computer in Maria’s school. Determine whether the graph shows a positive correlation, a negative correlation, or no correlation.

• positive correlation

• negative correlation

• no correlation

Multiple Choice

The number of siblings you have and your weight. 

• Positive correlation
• Negative correlation
• No correlation
• All of the above

Multiple Choice

What is the correlation?

• Negative correlation
• No correlation
• Positive correlation

Multiple Choice

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A
• B
• C
• D

Multiple Choice

Find the slope for the trend line using points (2,2) and (4,3)

• 2
• 1/2
• -2
• -1/2

Multiple Choice

A teacher made the following graph showing absences vs. final grades.  Predict the grade of a student that has 7 absences.

• 45
• 50
• 60
• 80

Multiple Choice

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside.  Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8,300
• 7,300
• 9,300

Multiple Choice

What type of correlation does this scatter plot show?

• positive linear association
• negative linear association
• no association
• nonlinear association

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• There is no line of best fit for this graph

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• There is no line of best fit for this graph.
• B
• C
• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• There is no line of best fit for this graph because there is no trend.

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• There is no line of best fit for this graph because there is no trend.

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D