Identifying Clusters in Grouped Data

Identifying Clusters in Grouped Data

Introduction

When data values are organized into groups or intervals, some groups may contain more values than others. Identifying these concentrations helps reveal patterns in a data distribution.

During breakfast at school, ten students recorded how many minutes they spent eating.

Their breakfast times are shown here. First, to see where the values are concentrated, plot each student’s breakfast time on a number line.

Next, choose equal intervals that cover all the data without gaps or overlaps. One way is to start at 10 and ...