Sentence Structures - Unit 2 AP Stats

Correlalation r = ___

There is a strong/moderate/weak positive/negative linear relationship between exp var and resp var.

Coeff of determination r^2 = ____

___% of variation in resp var is accounted for/explained by the linear relationship with exp var.

Std dev of residual Se or s 

The actual resp var is typically/on average about Se away from the number predicted by our model (LSRL)

Slope of LSRL (b)

For every 1 unit increase in exp. Var, our model predicts an average increase/decrease of b in resp var 

Residual (e)

This model over/under est. the resp var by about residual ( units)

Y-int of LSRL (a)

At an exp var of 0 units, our model predicts a in resp var