t
and F Similarities
1.
t
2
= F (with 1
df
)
2.
t
2
(15
df
)
= F
(1, 15
df
)
n
t-test
is based upon
mean
differences
n
F
-test
is based upon
variance
differences
n
t
=
calculated difference between sample means
n
chance difference (error)
n
F =
variance between sample means
n
chance variance
(error)
n
Numerator
differences btwn groups due to treatment
n
Denominator
differences btwn groups due to chance/ error