3.5-3.6 Review 1 Scatter Plots/Correlations/Linear Regressions

What type of correlation does this scatterplot display?

• Positive

• Negative

• No Correlation

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

Using your linear regression, what is y when x is 30?

• 61.59
• 52.46
• 57.94
• 59.76

As x increases, y decreases.

• no correlation
• negative correlation
• correlation coefficient
• positive correlation

As x increases, y increases

• correlation coefficient
• causation
• positive correlation
• negative correlation

Which graph represents data that has a correlation coefficient close to -1?

• 
• 
• 
• 

Estimate the correlation coefficient.

• r=0
• r=-1
• r=1
• r=2

Write the equation for the linear regression shown.

Write the linear regression equation for the following data points. Round to the nearest hundredth.

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade.

• No relationship exists between the number of books students read and their English grades.