Correlation Coefficient
Relationships
Trivia
Lines of Fit
Predicting Values
100
Describe this correlation coefficient as weak, moderate, or strong.
r= -0.99
Strong
100
Which relationship is modeled by the scatter plot
Negative Strong Relationship
100
What is the main profession of the Mario character Luigi?
Plumber
100
What form must lines of fit must be written in?
Slope-intercept form or y=mx +b
100
The relationship between the age of a tadpole in days (x) compared to its tail length in mm (y) is represented by y=-1.3x+17.5
Predict the length of the tail after 5 days.
11 mm
200
Describe this correlation coefficient as weak, moderate, or strong.
r= 0.20
Weak
200
Name all three types of scatter plot relationships
Positive, Negative and No Relationship
200
In what year was the first iPhone released?
2007
200
In order to calculate slope, you use....
200
The relationship between the age of a tadpole in days (x) compared to its tail length in mm (y) is represented by y=-1.3x+17.5
Predict the length of the tail after 12 days.
1.9 mm
300
Describe this correlation coefficient as weak, moderate, or strong.
r= 0.099
Weak
300
Which scatter plot relationship is this...
Positive Strong Relationship
300
What is the only bird that can fly backwards?
Hummingbird
300
Why is this a good line of fit?
It passes through most points, shows a trend, linear, etc
300
The relationship between the age of a tadpole in days (x) compared to its tail length in mm (y) is represented by y=-1.3x+17.5
Predict how long it takes for the tail to be 4 mm
10 days
400
Describe this correlation coefficient as weak, moderate, or strong.
r= -0.33
Moderate
400
Which relationship is modeled by the sentence...
"Quarters played in a basketball game vs. total points scored."
Positive Linear
400
Who quoted this line
"The best time to wear a striped sweater is all the time"
SpongeBob SquarePants
400
Two points on the line of best fit are (4, 85) and (2, 70). Find the slope for the line of best fit using these points.
15/2
400
The relationship between the age of a tadpole in days (x) compared to its tail length in mm (y) is represented by y=-1.3x+17.5
Predict how long until the tail is 1.5 mm.
12 Days
500
Describe this correlation coefficient as weak, moderate, or strong.
r= -0.74
Moderate
500
Which scatter plot relationship is this...
The relationship between a teacher's height and their salary at their job.
No Relationship
500
List the U.S. States that start with the letter "M"
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
500
Find the equation of the line of best fit 
y=-2x+20
500
The relationship between the age of a tadpole in days (x) compared to its tail length in mm (y) is represented by y=-1.3x+17.5
Predict how long it will take for the tadpole to have no tail.
13 days