Scatterplots

What type of correlation (association)?
The outside temperature and the amount of layers you wear. 

• Positive correlation
• Negative correlation
• No correlation

What is the type of association?

• Negative 
• no association
• 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 chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump
• negative: the less you run the less distance of your jump
• positive: the further your running start the less your distance

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. 

What kind of trend is shown from this scatterplot?

• positive correlation
• negative correlation
• none
• cannot be determind

Which scatter plot shows a linear relationship between x and y?

• Graph A
• Graph B
• Graph C
• Graph D

The equation of the trend line
is  y= 1/2x +1. What does the x variable represent? 
   

• The number of laps
• The amount of time in hours
• The amount of time in minutes
• How long it takes to go 0 laps

In a scatterplot, a cluster...

• ...is something we didn't learn in 8th grade
• ...is a point on the origin
• ...is a point that is far outside the main cluster of points/ordered pairs
• ...is a group of points that are close together

In a scatterplot, an outlier...

• ...is something we didn't learn in 8th grade
• ...is a point on the origin
• ...is a point that is far outside the main cluster of points/ordered pairs
• ...is a group of points that are close together