Texas Instruments TI-83 PLUS - Manual (Page 361)

TI-83 Plus Statistics 358
1 . Var Stats [ Xlistname , freqlist ]
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 (median-median) fits the model equation y=ax+b to the data
using the median-median line (resistant line) technique, calculating the
summary points
x
1
, y
1
, x
2
, y
2
, x
3
, and y
3
. Med . Med displays values for
a (slope) and b (y-intercept).
Med . Med [ Xlistname , Ylistname , freqlist , regequ ]