# Regression Analysis

?
What is regression analysis?
A technique to fit a model to data, model can be very simple or complex
1 of 15
What is the model equation?
y=a+bx
2 of 15
What are A and B representative of?
regression coefficients
3 of 15
What can we do?
Predict the value of Y from a given value of x (extrapolation/interpolation)
4 of 15
As usual what do we have?
A row for each pps
5 of 15
What is needed to be drawn and where is it found on SPSS?
Scatter plot, Analyse/Regression/Linear
6 of 15
What will regression analysis always do?
Yield coefficient even when meaningless
7 of 15
What are correlations/
There is one relationship between the variables and how much noise contributes
8 of 15
What doesn't a correlation always suggest though?
What the relationships is
9 of 15
What is regression analysis?
Tells what the relationship is but not whether it is real or not
10 of 15
What is simple regression?
The effect of one variable on another the line of best fit to the data
11 of 15
What happens when there is multiple IVs?
How they contribute to the DV, the plane of best fit
12 of 15
What is the 2 IVs equation?
Z= ax +by +C
13 of 15
What are extensions?
Regression analysis can be logically be extended to artibitary number of variables
14 of 15
What are 2 IVS?
Hard to portray 2D
15 of 15

## Other cards in this set

### Card 2

#### Front

What is the model equation?

y=a+bx

### Card 3

#### Front

What are A and B representative of?

What can we do?

### Card 5

#### Front

As usual what do we have?