SME
Grade 12 Math
Inference for the slope of a regression line
The main lesson, then each kind of problem it solves.
Inference for the slope of a regression line
Main lesson
Confidence interval for the slope
Use this for “b = 0.8 and SEb = 0.25 from 20 points. Find a 95% confidence interval for the slope.”
Is the correlation significant?
Use this for “r = 0.6 for 18 pairs of data. Is the correlation significant at 0.05?”
The standard error of the slope
Use this for “The residuals have s = 2, the x values have sₓ = 1.5 and n = 10. Is b = 1.2 significant?”