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. Elements of statistics. Statistics. Sec. RECTIFICATION OF THE NORMAL CURVE 107 TABLE A Fictitious Non-normal Frequency Distribution Class Interval / X Class Interval / 1 60 2 5- 80 5 0- 100 8 - 5 to - 90 10 -10 to - 80 12 -15 to 30 15 -20 to 10 20 -25 to 5 40 568 j
. Elements of statistics. Statistics. Sec. RECTIFICATION OF THE NORMAL CURVE 107 TABLE A Fictitious Non-normal Frequency Distribution Class Interval / X Class Interval / 1 60 2 5- 80 5 0- 100 8 - 5 to - 90 10 -10 to - 80 12 -15 to 30 15 -20 to 10 20 -25 to 5 40 568 ji = , approximately; and a = 99 95 90 80 c 70 ^60 § 50 ^ 40 "30 20 (A)« Normal (Table III) ® ACE scores. I I I I I I + 1 +2 0 +1 +2 -2 -1 0 X X Figures Some graphs of distributions on normal-arithmetic paper. It should be evident from Figures that the following are true: (a) The frequency distribution from Table III yields a perfectly straight line when as a percentage is plotted against A on a normal-arithmetic graph paper. (6) The frequency distribution of the ACE scores apparently is quite near to normal because the points of their graph on. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fryer, Holly Claire. Wiley
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