Independent Samples T-test : testing difference between
Open the SPSS program
A researcher is interested in the effects of sleep deprivation on a physical fitness.
The control group was allowed a regular amount of sleep (i.e., 7 hrs) and the
experimental group was deprived of sleep for 24 hrs. At the end of the 24 hrs. period
both groups received a physical stamina test.
The results of the test are listed below.
Do the data indicate a significant effect of sleep deprivation on physical fitness?
Assume p< .05, two-tail test.
Control group (i.e., 7 hrs of sleep):
11, 8, 10, 12, 13, 9, 14, 9, 9, 13
Experimental group (i.e., 24 hrs sleep deprivation):
5, 9, 8, 9, 6, 12, 7, 6, 10, 9
Set up the data set; your data set consists of two variables:
with codes indicating what condition (i.e., control or
experimental) is associated with each test score; assume that
(i.e., Test scores)
After entering all results your data set should look like the one below;