Case Study 7.1: The Flick Tail Study
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Variables:
OBS Index number
SET One of four possible dose combinations
MORPHINE Dose of morphine sulfate (mg/kg) injected
into study mice. The range is 0 to 8.0
DEL9 Dose of Delta9-THC (mg/kg) injected into
study mice. The range is from 0 to 16
FLICK The number of mice that flick the tail after
being applied a heat stimulus from beneath
REPS Number of repetitions (with different mice)
PROP Proportion of flicks = FLICK/REPS
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c71.dat:
obs set morphine del9 flick reps prop
1 O 0.0 0.0 0 10 0.0
2 A 1.0 0.0 0 10 0.0
3 A 2.0 0.0 2 10 0.2
4 A 3.0 0.0 4 10 0.4
5 A 4.0 0.0 4 10 0.4
6 A 5.0 0.0 6 10 0.6
7 A 6.0 0.0 9 10 0.9
8 A 7.0 0.0 9 10 0.9
9 A 8.0 0.0 8 10 0.8
10 B 0.0 1.0 0 10 0.0
11 B 0.0 2.0 0 10 0.0
12 B 0.0 4.0 9 10 0.9
13 B 0.0 8.0 9 10 0.9
14 B 0.0 16.0 10 10 1.0
15 AB 0.5 0.5 0 10 0.0
16 AB 1.0 1.0 2 10 0.2
17 AB 1.5 1.5 7 10 0.7
18 AB 2.0 2.0 9 10 0.9
19 AB 2.5 2.5 9 10 0.9
20 AB 3.0 3.0 9 10 0.9