Two histograms, for neonates given Formula 1 and Formula 2 separately.
Each histogram is uneven and it is difficult to tell the shape, although they might be thought to appear symmetrical.
There are superimposed Normal curves, which fit the data quite well, though it is hard to be sure.
Back to Inference about means.
This page maintained by Martin Bland.
Last updated: 24 July, 2009.