Example — Regression Analysis By

(Slope): For every 1-degree increase in temperature, how many more coffees do you sell?

Imagine you own a coffee shop. You want to know: Dependent Variable ( ): Daily iced coffee sales (what you want to predict). Independent Variable ( Regression Analysis by Example

For a regression to be reliable, your data must pass the "sniff test": (Slope): For every 1-degree increase in temperature, how

Regression isn't just about the past; it’s about the . With a solid model, you can check tomorrow's weather forecast and know exactly how much milk to order. Independent Variable ( For a regression to be

Your prediction errors are consistent (you aren't way more "off" on hot days than cold days). Normality: The errors follow a bell curve. Why this matters

): Daily high temperature (the factor you think causes the change). 1. The Simple Linear Model The goal is to find the equation for a straight line:

Once you run the numbers, you don't just take the result at face value. You check: R-Squared ( R2cap R squared