Statistics 11 : Must Revise there ..

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### Statistics for Economics

1. *Introduction to Statistics*

   - Definition, scope, and importance of statistics in economics.

   - Types of data: primary and secondary.

2. *Collection of Data*

   - Methods of data collection: surveys, questionnaires, interviews.

   - Sampling techniques: random sampling, stratified sampling.

3. *Organization of Data*

   - Classification of data: qualitative and quantitative.

   - Tabulation: frequency distribution tables.

4. *Presentation of Data*

   - Graphical representation: bar diagrams, histograms, pie charts, and frequency polygons.

5. *Measures of Central Tendency*

   - Arithmetic mean, median, mode.

   - Properties and applications of each measure.

6. *Measures of Dispersion*

   - Range, quartile deviation, mean deviation, standard deviation.

   - Coefficient of variation.

7. *Correlation*

   - Types of correlation: positive, negative, and zero.

   - Methods of measuring correlation: scatter diagram, Karl Pearson’s coefficient, Spearman’s rank correlation.

8. *Index Numbers*

   - Uses and types of index numbers.

   - Methods of constructing index numbers: Laspeyres, Paasche, and Fisher’s index.

 

These topics should give you a comprehensive understanding of the key areas in Class 11 Economics.


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