Types of Correlations
The ______ the points cluster to the line of best fit, the _____
the relationship that exists between the two variables
the ______ the points are from the line of best fit, the ______
the relationship that exists between the two variables.
When the points rise from lower left to upper right, there is a
________ correlation (if x increase, y increases_
Independent Variable = ______________________
Dependant Variable = ______________________
When the points fall from upper left to lower right, there is a
________ correlation (if x increase, y decreases
Describe any correlations in terms of positive or negative, linear or
Non-linear and strong, moderate, weak or none
__________________________________
When the points rise from lower left to upper right, there is a
When
thecorrelation
line of best
fit is horizontal,
________
(if x increase,
y decreases there is _____________
Interpret the relationship between the diameter of strawbs and
hours of direct sunlight_________________________________
____________________________________________________
Independent Variable = ______________________
Dependant Variable = ______________________
Describe any correlations in terms of positive or negative, linear or
Non-linear and strong, moderate, weak or none
__________________________________
Interpret the relationship between time spent playing video
games and grades______________________________________
____________________________________________________
1. Enter the data from the X axis (Ages) and Y axis (Value) into excel
2. Select a new cell and type “=correl” and select CORREL
3. Click and drag to select and highlight all values from the ‘Ages”
4. Type a comma, then highlight the “Value” data.
5. Hit enter to find your correlation coefficient
6. Use the figure on the left to interpret what type of relationship there is
The correlation between the age of cars and their value has a
___________________________ relationship (strong,weak,positive,negative,linear,nonlinear)
Bonus: once you have completed your correlation coefficient, navigate to
Tylervigen.com/spurious/correlation for some wild examples of weird correlations