Poisson distribution: a mean of 3.6
The bars show the chance of each number of events; the yellow bar is exactly 4 in a Poisson distribution with a mean of 3.6. For exactly 4 events, press 
, 
, 
, 
, then 4, 
, 3.6, : 0.191222339. For up to 4 events, press , , , 
, then 4, , 3.6, : 0.706438449. MODE then 0 returns to NORMAL mode.