Studied by 1 person
Response Variable
measures a outcome of a study
Explanatory Variable
may help predict or explain changes in a response variable
Scatterplot
shows the relationship between two quantitative variables measured on the same individuals. The values of one variable appear on the horizontal axis and the values of the other variable appear on he vertical axis. Each individual in the data set appears as a point in the graph.
Positive Association
when values of one variable tend to increase as the values of the other variable increase
Negative Association
when values of one variable tend to decrease as the values of the other variable increases
No Association
between two variables if knowing the value of one variable does not help predict the value of the other variable
Correlation r
for a linear association between two quantitative variables this measures the direction and strength of an association
