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Chapter 8: Statistics & Regression Calculations
05 cdfT( cdfT(
lower limit, upper limit, degree of freedom
)
Finds the T distribution probability within the specified range of x
for the T distribution with n degrees of freedom. A list cannot be
used.
Limitations:
Degree of freedom
≤
670
• Degrees of freedom is a positive real number.
Example
Find the probability of range X =
0.5 to 3.2 for T distribution with 9
degrees of freedom.
06 pdf
χ
2
χ
2
(
value, degree of freedom
)
Finds the probability density of a specified value x for the
χ
2
distribution with n degrees of freedom. A list cannot be used.
Limitations:
Degree of freedom
≤
141
• Degree of freedom is a positive real number.
Example
Find the probability density of
χ
2
distribution with 15 degrees of
freedom when x = 6.5.
07 cdf
χ
2
( cdf
χ
2
(
lower limit, upper limit, degree of freedom
)
Finds the
χ
2
distribution probability of a specified range of x for the
χ
2
distribution with n degrees of freedom. A list cannot be used.
• Degree of freedom is a positive real number.
Example
Find the probability of range x =
3 to 15 for the
χ
2
distribution with
10 degrees of freedom.