The frequency of leap years from 2000 to 2020 is ____ (years 2000 and 2020 are included).
6
A leap year has 366 days whereas non leap years have 365 days.
We get a leap year once every four years.
Frequency is the number of times an observation occurs in a data set.
From 2000 to 2020, the leap years are 2000, 2004, 2008, 2012, 2016, 2020.
The number of leap years from 2000 to 2020 is 6, so the frequency is 6.