Statistics - Texas Instruments TI-30XS Multiview User Manual

If Sydney, Australia is 21ÄC, find the temperature in degrees
Fahrenheit.
!$$$21 <

Statistics

% 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.
Variables
n
Ï or Ð
Sx or Sy
Îx or Îy
Òx or Òy
2 2
or Òy
Òx
Òxy
a
b
r
xÅ (2-Var)
Copyright © 2006 Texas Instruments Incorporated
% t
Definition
Number of x or (x,y) data points.
Mean of all x or y values.
Sample standard deviation of x or y.
Population standard deviation of x or y.
Sum of all x or y values.
Sum of all x
Sum of (x ...y) for all xy pairs.
Linear regression slope.
Linear regression y-intercept.
Correlation coefficient.
Uses a and b to calculate predicted x
value when you input a y value.
v
2 2
or y values.
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