Question

3 exampls of discrete variable ​

Answer 1

Number of coin flips: 4. (It can't meaningfully be 4.3)
Number of books published: 2. (It can't meaningfully be 2.1)
Distance walked, rounded to the nearest kilometer: 3 (We rounded it, so it can't be 3.2)

Answer 2

Number of coin flips

Number of books published

Distance walked, rounded to the nearest kilometer