17
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Logic II 17
weight by less than half a grain. The points plotted in
red with circles about them are these actual observations.
In order to have represent these observations, I have
adopted the following rough-and-ready theory; for to make
elaborate calculations would, from every point of view, be a
waste of time. I have assumed that there were five different
standards; and that the [?] weights depart from their standards
according to the probability curve (which will be explained
in a subsequent chapter); and that the probably error of a single
weight is 5/8 grain. I assume that of the 144 weights
36 |
|
|
25 | " " " " " " " " |
|
26 | " " " " " " " " | 144.7 grains |
23 | " " " " " " " " | 146.95 grains |
34 | " " " " " " " " | 149.7 grains |
I have besides drawn on the diagram curves in blue, which cut
the ordinates of the red dots in points whose ordinates show
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