TI-83 Plus Tables and Reference Information 724
where: I= number of populations
xi= the mean of each list
Sxi= the standard deviation of each list
ni= the length of each list
x= the mean of all lists
2.SampÜTest
Below is the definition for the 2.SampÜTest.
Sx1, Sx2= Sample standard deviations having n1-1 and n2-1
degrees of freedom df, respectively.
Û=Û-statistic = 2
2
1
Sx
Sx
df(x, n1-1, n2-1)=Ûpdf( ) with degrees of freedom df, n1-1, and n2-1
p= reported p value