Of course there is no single "right" way to write a caption. The one here will do, however.
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| Fig 1. Mean heights of tree saplings after three months of growth (n = 12 per sample). Height was measured as the distance from soil level to base of the top leaf of the sapling. Error bars represent standard deviation. |
The remaining pages present sets of test questions on the topics covered by this tutorial. You should not have trouble with most of them. If you do do, then you might want to go back to the beginning and review the material. Questions marked with an asterisk may be more challenging, even tricky. You are a real expert if you get them all right!