Sharp el-9950 - Page 182

181
Chapter 8: Statistics & Regression Calculations
05 cdfT( cdfT(lower limit, upper limit, degree of freedom)
FindstheTdistributionprobabilitywithinthespecied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
( pdf
χ
2
(value, degree of freedom)
Findstheprobabilitydensityofaspecied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.