APA Style Summary Statement T Tests. IQ in Vermont The mean IQ of school children in Vermont, M = 100.26, SD = 12.98, was not significantly different.

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Presentation transcript:

APA Style Summary Statement T Tests

IQ in Vermont The mean IQ of school children in Vermont, M = , SD = 12.98, was not significantly different from 100, t(87) = 0.189, p =.85, d =.02, 95% CI [-.19,.23].

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.

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.

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.

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?

IQ and Voting Mean state IQ was significantly greater in states that voted for Kerry (M = , 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].