Which of the following variables are best thought of as cont

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

(a) The mass of the solid impurities per milliliter of Los Angeles tap water

Discrete or Continuous

(b) The amount of coffee in a cup dispensed by a coin-operated coffee machine

Discrete or Continuous

(c) The number of insects feeding on a tree leaf

Discrete or Continuous

(d) The number of participants in a study who describe themselves as \"perfectionistic\"

Discrete or Continuous

Solution

a) The mass of the solid impurities per milliliter of Los Angeles tap water

Continuous

(b) The amount of coffee in a cup dispensed by a coin-operated coffee machine

Continuous

(c) The number of insects feeding on a tree leaf

Discrete

(d) The number of participants in a study who describe themselves as \"perfectionistic\"

Discrete