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Texas Instruments TI-84 Plus - 2-Var Stats; Med-Med (Ax+B); Linreg (Ax+B)

Texas Instruments TI-84 Plus
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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
r
2
and r.

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