Chapter 23 of 25
Revision Notes
Correlation — Revision Notes
ICSE · Class 11 · Economics
Correlation revision notes for ICSE Class 11 Economics: 4 topics in quick points. Part of the ICSE Class 11 Economics syllabus.
64 questions40 flashcards5 concepts
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Key Topics to Revise
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1. Meaning, Nature, and Importance of Correlation
- Correlation is the study of how variables move together.
- When a change in one variable is accompanied by a change in another, the variables are correlated.
- Correlation analysis of two variables is called bivariate analysis.
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2. Types and Degrees of Correlation
- Correlation is classified in three ways: by direction, by number of variables, and by linearity.
- By direction, correlation may be positive or negative.
- Positive correlation is also called direct correlation.
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3. Methods of Measuring Correlation
- The main methods are scatter diagram, Karl Pearson's coefficient of correlation, and rank correlation.
- Scatter diagram is a non-mathematical method.
- Karl Pearson's coefficient of correlation is a mathematical method.
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4. Karl Pearson's Coefficient of Correlation
- Karl Pearson gave the Product Moment Correlation method in 1890.
- The coefficient is denoted by r.
- Its value always lies between -1 and +1.
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Full NotesKey Concepts
Correlation exists when two variables varyAssociation is a general relationship betweenCorrelation analysis of two variablesCorrelation may be positive or negativeSimple correlation studies two variables
Frequently Asked Questions
What are the important topics in Correlation for ICSE Class 11 Economics?
Key topics in Correlation include Meaning, Nature, and Importance of Correlation, Types and Degrees of Correlation, Methods of Measuring Correlation, Karl Pearson's Coefficient of Correlation. Study these first, then practise questions on each for Class 11 exams.
How should I revise Correlation for Class 11 exams?
Learn the core ideas first, then work through the 64 practice questions on Correlation. Revise definitions regularly and use flashcards for quick recall before the exam.
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