Topic explanation

Standard explanation

Find n/2 in the CF column. That class contains the median. Interpolation splits the class width in proportion to how far CF still needs to go.

Key points

• CF crosses n/2
• median class at n/2
• mode = tallest class
• keep the ideas separate
• Median Class: Find n/2 in the CF column. That class contains the median. Interpolation splits the class width in p
• WHAT — MEDIAN CLASS: Find n/2 in the CF column. That class contains the median. Interpolation splits the class width in p
• HOW — Use the idea: Identify what is given, select this topic's rule or evidence, apply it one step at a time, and check
• CORE UNDERSTANDING: Find n/2 in the CF column. That class contains the median. Interpolation splits the class width in p

Labelled diagram