Statistics and Data Plots 549
Management. All statistical variables are cleared when you edit the data or change the
calculation type. Other conditions that clear the variables are listed.
Calculated Variables
Calculated VariablesCalculated Variables
Calculated Variables
Statistical variables are stored as system variables. However, regCoef and regeq are
treated as a list and a function variable, respectively.
One
Var
Two
Var
Regressions
mean of x values üü
sum of x values GxGx
sum of x2 values Gx2Gx2
sample std. deviation of x Sx Sx
population std. deviation of x sxsx
number of data points nStat nStat
mean of y values ÿ
sum of y values Gy
sum of y2 values Gy2
sample standard deviation of y Sy
population std. deviation of y sy
sum of x†y values Gxy
minimum of x values minX minX