"The values on the horizontal axis represent the range of heights of Englishmen in the Victorian age. The vertical axis is a relative scale indicating the proportion of Englishmen from the total population who have a particular height within the range. We see that the average height of an Englishmen is 5'6 and the range of heights is between 5'3 and 5'9.
"An Englishman less than 5'3 would be considered unusually short, and one taller than 5'9 would be unusually tall. You would expect to see only about one in a thousand Englishmen above or below the normal range."
Regards,
Simon
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