Scatterplots and Line of Best Fit Intro

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

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

• 90

• 180

• 135

• 150

identify the outlier

• 30, 100

• 100, 30

• there is no outlier

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

Determine the predicted income if 22 hours were worked on an assembly job.

• $207.30

• $449.60

• $691.90

• $543.30

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

• Strong positive

• Weak positive

• Strong negative

• Weak negative

When you check your scatter plot to see if it is straight (linear), curved, or any other pattern you are looking at _________

• Form

• Direction

• Outlier

• Strength

Determine the correlation coefficient of the given data:

• .9820

• -.9643

• 1.409

• .6864

What type of Correlation?

• Positive Correlation

• Negative Correlation

• No Correlation