Is the relationship real or just a fluke? A p-value under 0.05 generally means your result is statistically significant. 3. Adding Complexity (Multiple Regression) Temperature isn't the only factor. You might add: X2cap X sub 2 : Is it a weekend? (0 for no, 1 for yes). X3cap X sub 3 : Is there a discount running?Now your model looks like: 4. The "Golden Rules" (Assumptions)
Once you run the numbers, you don't just take the result at face value. You check: R-Squared ( R2cap R squared Regression Analysis by Example
For a regression to be reliable, your data must pass the "sniff test": Is the relationship real or just a fluke
Regression Analysis is essentially the art of finding the "best-fit" story between variables. If you’re looking to master it or explain it effectively, The Concept: Predicting Coffee Shop Sales X3cap X sub 3 : Is there a discount running
Imagine you own a coffee shop. You want to know: Dependent Variable ( ): Daily iced coffee sales (what you want to predict). Independent Variable (