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simple linear regression in 8 steps (part 1 - in spss)
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Simple Linear regression
8 steps to do simple regression (part 1 SPSS)
1.Plot data
2. Add regression line ( minimising vertical squared residuals)
3. Add confidence / Prediction intervals
4. Obtain model statistics
5. Obtain influence statistics (influence=distance x leverage)
6. Consider all "LINE" assumptions - - Statistical validity
7. Regression diagnostics
a. Equal variance over range of x values
b. Normal dist. of residuals
8. Consider "dangers" of regression - Statistical validity:
a. Range
b. Sub groups
c. Correlation - causation - Bradford hill criteria
More details, see:
8 steps to do simple regression (part 1 SPSS)
1.Plot data
2. Add regression line ( minimising vertical squared residuals)
3. Add confidence / Prediction intervals
4. Obtain model statistics
5. Obtain influence statistics (influence=distance x leverage)
6. Consider all "LINE" assumptions - - Statistical validity
7. Regression diagnostics
a. Equal variance over range of x values
b. Normal dist. of residuals
8. Consider "dangers" of regression - Statistical validity:
a. Range
b. Sub groups
c. Correlation - causation - Bradford hill criteria
More details, see:
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