Which of the following variables are best thought of as cont

Which of the following variables are best thought of as continuous, which discrete?

Variable

Discrete or Continuous

(a) The fuel efficiency, in miles per gallon, of an American-made car

(b) The number of typographical errors in an edition of the metropolitan newspaper

Solution

a) The varaible is Continuous as it can takes values in decimals, like 12.1 miles/gallons, 11.01 miles/gallons, ....

b) The varaoble is discrete as it will take integral values only like 1,2,10,15,....

c) The varaoble is discrete as it will take integral values only like 0, 1,2, 3

d) The varaible is Continuous as it can takes values in decimals, like, 12.5 hours, 20.1 hours,....