Question

Which will have a continuous probability distribution

a) The length of a cut piece of wood

b) The number of marbles in a bag

c) The number of children in a family

d) The mass of fish caught

Answer 1

A discrete variable is a variable whose value is obtained by counting.

Examples:    the number of marbles in a bag,

the number of children in a family. 

A continuous variable is a variable whose value is obtained by measuring.

 Examples:    the length of a cut piece of wood,

the mass of fish caught.

a) The length of a cut piece of wood. 

d) The mass of fish caught.