Copyright © 2006 Texas Instruments Incorporated 31
If Sydney, Australia is 21ÄC, find the temperature in degrees
Fahrenheit.
Statistics% t v
% t displays a menu with the following options:
•1-Var Stats analyzes statistical data from 1 data set with 1
measured variable, x.
•2-Var Stats analyzes paired data from 2 data sets with 2
measured variables—x, the independent variable, and y,
the dependent variable.
•StatVars displays a secondary menu of statistical
variables. The StatVars menu only appears after you have
calculated 1-Var or 2-Var stats. Use $ and # to locate
the desired variable, and press < to select it.
!$$$21 <
Variables Definition
nNumber of x or (x,y) data points.
Ï or ÐMean of all x or y values.
Sx or Sy Sample standard deviation of x or y.
Îx or ÎyPopulation standard deviation of x or y.
Òx or ÒySum of all x or y values.
Òx2 or Òy2Sum of all x2 or y2 values.
Òxy Sum of (x …y) for all xy pairs.
aLinear regression slope.
bLinear regression y-intercept.
rCorrelation coefficient.
xÅ (2-Var) Uses a and b to calculate predicted x
value when you input a y value.