Scatter Plot Association
This type of association the explanatory variable and response variable have when they both increase together
What is a Positive Association?
This axis is where the explanatory variable should be graphed.
Where is on the x-axis?
The correlation coefficient are between these values.
What is 1 and -1?
The letter used to represent the correlation coefficient
What is "r"?
An equation or formula that simplifies and represents reality.
What is a "model"?
The type of association the explanatory variable and response variable have when they both decrease
What is a Negative Association?
Variable influenced by the explanatory variables
What are Response Variables?
Correlation does not mean...
What is Causation?
The formula used to calculate residuals
What is Actual - Expected?
This is another term for the line of best fit.
What is "Least Squares" or "Regression Line"?
The type of association when the correlation coefficient is 0.
What is No Association?
The response variable should be graphed
Where is on the y-axis?
The units correlation is measured in
What are there are no units?
The b variable in a linear regression model measures this..
What is the slope?
The difference between data values and the corresponding values that are predicted.
What are "residuals"?
The type of association when the residuals from the line of best fit shows a pattern
What is a Nonlinear Association?
A variable, other than x and y, that simultaneously affects both variables, accounting for the correlation between the two.
What is a lurking variable?
Correlation is sensitive to these
What are Outliers?
The a variable in a linear regression model measures this
What is the y-intercept (starting point)?
Something we should not do when using a linear model.
What is "extrapolate beyond the data"?
The word that describes how closely the points are from the line of best fit.
What is Strength?
The variable used for variance
What is r2 (r - squared)?
Correlation measures...
What is the strength of a linear association?
How to find the correlation coefficient given the variance?
What is "take its square root"?
This variable is used to denote an estimation of a response variable
What is y-hat?