Column Formula CI Calculating

[#1]

I'm putting CI into columns and need to calculate the t-statistic from a look up table that will vary row to row. How do I use a formula to write the value for,

t(0.05,(n1+n2-2)

value from a t-table at 2-sided 90% CI (0.05), and degrees of freedom

[#2 · Accepted solution]

Hi @JMPUser9  : If I understand your question correctly: Here it is.

t Quantile( 0.05, (:n1 + :n2) - 2 )