RT Book, Section
A1 Glantz, Stanton A.
SR Print(0)
ID 57420910
T1 Appendix A. Computational Forms
T2 Primer of Biostatistics, 7e
YR 2012
FD 2012
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-178150-3
LK accessanesthesiology.mhmedical.com/content.aspx?aid=57420910
RD 2021/03/01
AB If the value you need is not in the statistical table, it is possible to estimate the value by linear interpolation. For example, suppose you want the critical value of a test statistic, C, corresponding to ν degrees of freedom, and this value of degrees of freedom is not in the table. Find the values of degrees of freedom that are in the table that bracket v, denoted a and b. Determine the fraction of the way between a and b that v lies, f = (ν − a)/(b − a). Therefore, the desired critical value is C = Ca + f (Cb − Ca), where Ca and Cb are the critical values that correspond to a and b degrees of freedom.