Question

In: Statistics and Probability

Is the cost of a statistic book discrete or continuous?

Is the cost of a statistic book discrete or continuous?

Solutions

Expert Solution

Discrete and Continuous Random Variables:

A discrete variable is obtained by counting.Sometimes it might take you a long time to count the last item, but the point is it’s still countable.The number of permitted values is either finite or countably infinite.Common examples are variables that must be integers.

Examples:     number of students present at the classroom

                      number of red marbles in a jar

                     number of heads when flipping coins

A continuous variable is one which can take on an uncountable set of values.Continuous Data can take any value (within a range).In continuous-time dynamics, the variable time is treated as continuous variable.

Examples:

  • A person's height
  • A dog's weight
  • The length of a leaf

Here the question is about cost of a statistics book. So Price can take any values which is non negative including decimal places. For example the price can be $500 or $500.50 and it cannot consider under discrete variavle. Hence price of a statistics book is a continuous variable.

  


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