Critical Values for the t Distribution (one/two-tailed)
Source: http://kaib.people.cofc.edu/teaching/common/t.pdf
Critical Values for the F Distribution
Source: http://www.sussex.ac.uk/Users/grahamh/RM1web/F-ratio%20table%202005.pdf
Critical Values of the Studentized Range Statistic (Tukey's HSD Critical Values)
Source: http://www.watpon.com/table/studen_range.pdf
Random Number Table
Source: http://academic.cengage.com/resource_uploads/downloads/0534627943_27463.pdf
Critical Values for Pearson's r
Source: http://www.radford.edu/~jaspelme/statsbook/Chapter%20files/Table_of_Critical_Values_for_r.pdf
Critical Values for Chi Square
Source: http://faculty.vassar.edu/lowry/PDF/csqcrit.pdf