Statistics and Data Plots 549
†† corr is defined for a linear regression only; R
2
is defined for all polynomial
regressions.
sum of y
2
values Gy
2
sample standard deviation of y Sy
population std. deviation of y
sy
sum of x†y values Gxy
minimum of x values minX minX
maximum of x values maxX maxX
minimum of y values minY
maximum of y values maxY
1st quartile q1
median medStat
3rd quartile q3
regression equation regeq
regression coefficients
(a, b, c, d, e)
regCoef
correlation coefficient †† corr
coefficient of determination ††
R
2
summary points
(MedMed only) †
medx1, medy1,
medx2, medy2,
medx3, medy3
One
Var
Two
Var
Regressions
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