G gad4 New member Joined Jun 18, 2026 Messages 0 Reaction score 0 May 6, 2015 #1 when they ask one to calculate the t statistic, when does use b/s and when does one use r*sqrt(n-2)/sqrt(1-r2)?
when they ask one to calculate the t statistic, when does use b/s and when does one use r*sqrt(n-2)/sqrt(1-r2)?
S S2000magician New member Joined Jun 18, 2026 Messages 0 Reaction score 0 May 6, 2015 #2 That last formula is only for testing whether the correlation coefficient is significantly different from zero.
That last formula is only for testing whether the correlation coefficient is significantly different from zero.
C capaldij New member Joined Jun 18, 2026 Messages 0 Reaction score 0 May 10, 2015 #3 Also, pretty sure the last formula is ONLY for linear regression.