Calculator User Manual

Chapter 12: Statistics 308

2-Var Stats

2-Var Stats2-Var Stats

2-Var Stats

2-Var Stats (two-variable statistics) analyzes paired data. Xlistname is the independent

variable.

Ylistname is the dependent variable. Each element in freqlist is the frequency of

occurrence for each data pair (

Xlistname,Ylistname).

2-Var Stats [Xlistname,Ylistname,freqlist]

Med-Med (ax+b)

Med-Med (ax+b)Med-Med (ax+b)

Med-Med (ax+b)

Med-Med (median-median) fits the model equation y=ax+b to the data using the median-

median line (resistant line) technique, calculating the summary points x1, y1, x2, y2, x3,

and y3.

Med-Med displays values for a (slope) and b (y-intercept).

Med-Med [Xlistname,Ylistname,freqlist,regequ]

LinReg (ax+b)

LinReg (ax+b)LinReg (ax+b)

LinReg (ax+b)

LinReg(ax+b) (linear regression) fits the model equation y=ax+b to the data using a least-

squares fit. It displays values for

a (slope) and b (y-intercept); when DiagnosticOn is set, it

also displays values for

and r.