Class Interval/Examples

Examples of Class Intervals

Arbitrary Example

Consider the problem domain of employee wages.

We may count the number of employees earning a wage in each of the following ranges:

between $\pounds 0.00$ and $\pounds 199.99$

between $\pounds 200.00$ and $\pounds 299.99$

between $\pounds 300.00$ and $\pounds 399.99$

Hence the class intervals in question are:

$\closedint {0.00} {199.99}$

$\closedint {200.00} {299.99}$

$\closedint {300.00} {399.99}$

Hence the number of employees in each class interval gives the class frequency of that interval.