Trying to help a friend out with this, but I'm not sure how to standardize this data (ie comparing two normal distributions if they have different arithmetic means and/or standard deviations)
we have this data on 2 types of bacteria:
-Initial Number of Bacteria at Time Zero
-Number of Human Cells at Time Zero (Cells that will be infected)
-Multiplicity of Infection (Initial Number of Bacteria divided by Number of Human Cells)
-Number of Bacteria after 3 hours (Time 3-hr Supernatant)
-Number of Bacteria attached and invaded into Human Cells after 3 hours (Time 3-hr Cells)
-Number of Bacteria invaded after 6 hours (GEN)
-Number of Bacteria attached (Time 3-hr Cells minus GEN)
We are looking at:
1) Adhesiveness- how well the bacteria sticks to the surface of the human cell
2) Invasiveness- how well the bacteria gets inside the human cell
I'm somewhat confused because if this was a straight stats problem it'd be cake but I don't see how I can compare/configure any means, standard deviations, or normal-distribution graphs with this info.
thanks