T Tests IQ in Vermont The mean IQ of school children in Vermont M 10026 SD 1298 was not significantly different from 100 t 87 0189 p 85 d 02 95 CI 19 23 ID: 395943
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Slide1
APA Style Summary Statement
T TestsSlide2
IQ in Vermont
The mean IQ of school children in Vermont,
M
= 100.26,
SD
= 12.98, was not significantly different from 100,
t
(87) = 0.189,
p
= .85,
d
= .02, 95% CI [-.19, .23].Slide3
Group MM mice
Reared by a house mouse in a mouse colony room.
Mice in Group MM made significantly more visits to the house mouse scented tunnel,
M
= 22.44,
SD
= 12.82, than to the rat scented tunnel,
M
= 7.56,
SD
= 5.89, t(15) = 5.639,
p
< .001,
d
= 1.49.Slide4
Group MR mice
Reared by a house mouse in a rat colony room with rat scents added to their cages.
Mice in Group MR made significantly more visits to the house mouse scented tunnel,
M
= 22.31,
SD
= 10.21, than to the rat scented tunnel,
M
= 7.56,
SD
= 5.74, t(15) = 7.797,
p
< .001,
d
= 1.78.Slide5
Group RR mice
Reared by a rat in a rat colony.
For the mice in Group RR, the number of visits made to the house mouse scented tunnel,
M
= 23.44,
SD
= 8.51 did not differ significantly from the number of visits made to the rat scented tunnel,
M
= 24.75,
SD
= 8.10, t(15) = 7.797,
p
= .54,
d
= .16.Slide6
Weight Loss
Those who completed Program A lost significantly more weight (
n
= 6,
M
= 22.67,
SD
= 4.27) than did those who completed program B (
n
= 12,
M
= 13.25,
SD
= 4.09),
t
(9.71) = 4.469,
p
= .001, 95% CI [4.70, 14.13].
What the most important statistic given in the statement above?
Why didn’t I compute Cohen’s
d
?Slide7
IQ and Voting
Mean state IQ was significantly greater in states that voted for Kerry (
M
= 100.95,
SD
= 1.99,
n
= 20) than in those that voted for Bush (
M
= 99.26,
SD
= 2.42,
n
= 31),
t
(46.1) = 2.72,
p
= .009,
d
= .75, 95% CI [.16, 1.33].