I got a list of Influenza-specific antibody titers from a hemagglutination inhibition assay.
They look like this:
One site says: “The swine influenza HI scale is geometric: 20, 40, 80, 160, 320, 640 (successive values increase by a factor of 2). The geometric scale is logarithmic. It is best to express an average influenza HI titer as a geometric mean. A geometric mean is calculated by averaging the logarithms of the test values and then converting the mean to a real number. This prevents a few obviously high positive values from making the mean unrealistically large.”
What does that mean for my sample? How do I deal with
<10 in this calculation? This is surely not rocket science, but honestly I don’t get it right now.