# Data analyses

Attached are data from 2 populations; the first population consists of subjects numbered Combined-POS-1 thri 156 that have been tested for CD4 % LYMPHOCYTES (pos) WBC (X1000/ul) (pos) HB (g/dl) (pos) PLATELETS (x1000/ul) (pos)

The second population consists of subjects numbered Combined-NEG-1

There are 642 that have also been tested for CD4 % LYMPHOCYTES (pos) WBC (X1000/ul) (pos) HB (g/dl) (pos) PLATELETS (x1000/ul) (pos).

The study objective is to determine if there is a statistically significant difference in either population for these tests.(i.e. is the CD4 result different between population 1 and population 2)

The t test, regressions, charts and correlations are the only tools allowed to make this determination; one is limited to using excel (data analysis) for the charts and analysis.

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The expert examines that data populations for different combination of tests. The study's objective is to determine if there is a statistically significant difference in either population for the tests.