Statistics Saturday: Papal Regnal Numbers Over Time, 1900 – Present


Line chart of Papal regnal numbers for each year from 1901 to through 2021; eg, Leo XIII (13), Pius X (10), Benedict XV (15), up to today's Francis (I). Also across this is a red line showing the number has been, on average, decreasing with time.
The red line is the best-fit linear interpolation of these numbers over time. The projection is that if trends of the past 120 years continue then sometime in the year 2070 we can expect a Pope with regnal number of 0.

Reference: Pluto and Charon: Ice Worlds on the Ragged Edge of the Solar System, Alan Stern and Jacqueline Mitton.

Author: Joseph Nebus

I was born 198 years to the day after Johnny Appleseed. The differences between us do not end there. He/him.

3 thoughts on “Statistics Saturday: Papal Regnal Numbers Over Time, 1900 – Present”

    1. Not to worry. I have my doubts about the value of Pi Day as a mathematics education tool, but it is one of the chances I have to get all spammy with my mathematics blog and not look too suspicious. … Well, you’ll see in six minutes.

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