Scatter Diagrams Flashcards
1
Q
What type of data are scatter diagrams used for
A
Bivariate data
2
Q
Where do you plot the explanatory variable
A
On the x axis
3
Q
Where do you plot the response variable
A
The y axis
4
Q
When do you draw a line of best fit
A
If there is a linear relationship between the variables
5
Q
Where should the line of best fit fall
A
Passing as close to as many points as possible with roughly equal numbers of points on both sides
6
Q
What is correlation
A
The connection between both variables
7
Q
What is a positive correlation
A
As one variable increases the other increases
8
Q
What is negative correlation
A
As one variable increases the other decreases
9
Q
What does it mean if there is no correlation
A
The points are too scattered to draw a line of best fit
