MathematicsChapter 12: Basic Statistics
Modal Class
Highest f. Interpolation uses neighbouring frequencies in the book formula.
Learning objectives
- Define and explain modal class.
- Apply modal class to a focused FBISE question.
- Check the answer for correct terms, evidence, working, and units.
Definition
Highest f. Interpolation uses neighbouring frequencies in the book formula. A bimodal set has two peaks - named idea.
Where / symbols
- Modal Class
- Highest f. Interpolation uses neighbouring frequencies in the book formula. A bimodal set has two peaks - named idea.
Relationship
- mode = tallest class
Overview
Learn the idea, then use it:
Core Understanding
Highest f. Interpolation uses neighbouring frequencies in the book formula. A bimodal set has two peaks - named idea.
Examples highest bar · median class at n/2 · mode = tallest class · MODAL CLASS: Highest f. Interpolation uses neighbouring frequencies in the book formula. A bimodal set has two peaks - named idea.
Exam Application
State the correct term, connect it to the chapter rule or evidence, and use a clear example or calculation.
Examples Define first · Show the rule or evidence · Check units, labels, and conclusion
WHAT — MODAL CLASS
Highest f. Interpolation uses neighbouring frequencies in the book formula. A bimodal set has two peaks - named idea.
HOW — Use the idea
Identify what is given, select this topic's rule or evidence, apply it one step at a time, and check the result.
In simple words
Do not merge modal class with a neighbouring idea that uses a different definition, rule, or method.
Key points
- highest bar
- median class at n/2
- mode = tallest class
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Modal Class
Sticky Notes · Quick Revision
Core Idea
- Highest f.
Key Points
- highest bar
- median class at n/2
- mode = tallest class
Simple Check
- Explain modal class in your own words and connect it to one chapter example.
How to Answer
- Define the idea, show the main rule or evidence, apply it, and check the final statement.
Common Mistake
- Do not merge modal class with a neighbouring idea that uses a different definition, rule, or method.
FBISE Exam Tip
- Use the exact term, show working where needed, and include units or labelled evidence.
60-second revision
- Highest f.
- highest bar
- median class at n/2
- mode = tallest class
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