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The Lighter Side / Re: Myths debunked when doing family histroy.
« on: Today at 09:53 »
"Mean average": what means that?
Also of interest, perhaps, is the average age of the menarche (first menstruation):
figures from Germany give 16.1 in 1900, falling to 13.1 in 1960, with the steepest fall in the post-war years. I don't know whether that average is the mean, mode, or median, but I rather dread to think how low it must be now if the trend has continued.
The average age of the menopause changed less, from 47 or 48 until the war, rising to somewhat over 49 by 1960. I couldn't find later figures, or for earlier centuries.
Also of interest, perhaps, is the average age of the menarche (first menstruation):
figures from Germany give 16.1 in 1900, falling to 13.1 in 1960, with the steepest fall in the post-war years. I don't know whether that average is the mean, mode, or median, but I rather dread to think how low it must be now if the trend has continued.
The average age of the menopause changed less, from 47 or 48 until the war, rising to somewhat over 49 by 1960. I couldn't find later figures, or for earlier centuries.