Statistics · Unit 3
Linear Regression
Practice
20 carefully crafted questions on interpreting slope, y-intercept, making predictions, and understanding model limits.
⚡ Quick Memory Points
SLOPE = RATE
For every 1 unit ↑ in x,
y changes by slope on average
Y-INT = START
Predicted y when x = 0
(may not be realistic!)
PLUG & CHUG
Prediction: replace x with given value,
solve for ŷ
CONTEXT CHECK
Always ask: does this make sense
in the real world?