,
7 tweets,
2 min read
Read on Twitter
Wide range of guesses at length of Johnson's term as PM in sweepstake: mean 525 days; median 134 days. Enter here docs.google.com/forms/d/e/1FAI… 
Johnson's time is drawing shorter: mean guess now 461 days; median 128. That means half say shorter than 128 and half longer, but many of those saying longer think he'll be PM for several years. Enter your guess here docs.google.com/forms/d/e/1FAI…
George Canning the shortest total tenure as PM so far, 119 days
Although Marquess of Rockingham's 2nd term was only 96 days, but he had already done a year
Median guess in sweepstake is Boris Johnson will last 133 days as PM, although the mean is 470 days. Enter your guess here docs.google.com/forms/d/e/1FAI…
Highest entry (ignoring one joker who took us to the end of the Sun) is 3,650 days, or 10 years
Lovely example for maths classes of the use of different averages for an asymmetrical distribution
