Review Scatter Plots Trend Lines Functions And Linear Equation

When scatter plots demonstrate a linear relationship, a(n) ​ (a)   line can be used to show the general pattern of the data.

• straight

• points

• outlier

• association

• cluster

What is another term for trend line?

• Straight line

• Linear

• Line of Best Fit

How do I determine the y-intercept of the trend line from a graph?

• look where the line crosses the y-axis

• use the slope formula

What is the slope - intercept form?

• y = mx + b

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

• A

• B

• C

• D

Which of the following would be the most accurate equation for the scatter plot?

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 25x + 7

• Positive, strong
• Positive, weak
• Negative, strong
• Negative, weak

What is the type of correlation for the following scatter plot?

• Negative 

• None

• Positive 

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 6 chapters. 

• ≅100 pages

• ≅170 pages

• ≅60 pages

• ≅20 pages

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases