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Texas Instruments TI-30X Pro MathPrint Manual

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(m), which must be a real number > 0. x can be an
non-negative integer (SINGLE) or a list of integers
(LIST). The default is mu=1. The probability density
function (pdf) is:
7:Poissoncdf Computes a cumulative probability at x for the
discrete Poisson distribution with the specified
mean mu, which must be a real number > 0. x can
be an non-negative integer (SINGLE) or a list of
integers (LIST). The default is mu=1.
Stats Results
Variables 1-Var or 2-Var Definition
n
1-Var Number of x or (x,y) data points.
v
Both Mean of all x values.
w
2-Var Mean of all y values.
Sx
Both Sample standard deviation of x.
Sy
2-Var Sample standard deviation of y.
sx
Both Population standard deviation of
x.
sy
2-Var Population standard deviation of
y.
Gx or Gx
2
Both Sum of all x or x
2
values.
Gy or Gy
2
2-Var Sum of all y or y
2
values.
Gxy
2-Var Sum of (xQy) for all xy pairs.
a
2-Var Linear regression slope.
b
2-Var Linear regression y-intercept.
r
2
or r 2-Var Correlation coefficient.
x¢
2-Var Uses a and b to calculate
predicted x value when you input
a y value.
y¢
2-Var Uses a and b to calculate
predicted y value when you input
an x value.
minX or maxX Both Minimum or maximum of x
values.
Q1
1-Var Median of the elements between
minX and Med (1st quartile).
Med
1-Var Median of all data points.
Math Functions 33
… 37 …


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