Organisation of Data · Class 11 Economics · Chapter 3
📈 Organisation of Data (Statistics for Economics)
CBSE Class 11 Humanities & Commerce · Economics · Chapter 1
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📖Notes Deck
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Download PDF →Top question patterns · CBSE annual / SQP aggregate
| 85% | Construct a frequency distribution from raw data using tally marks — Range → equal classes (exclusive) → tally once → frequencies → check Σf=N → neat 3-column table. | 6 MARKS |
| 75% | Class limits vs class boundaries (+ mid-value & magnitude) — Limits = written end-values; boundaries = after adjustment; mid-value=(L+U)/2; magnitude=U−L; coincide in exclusive series. | 4 MARKS |
| 70% | Inclusive vs exclusive method + conversion — Exclusive excludes upper limit, no gap; inclusive includes both, has gap; convert via half-gap adjustment. | 4 MARKS |
| 55% | Discrete vs continuous variable — Discrete = separate whole values (children); continuous = any value incl. fractions (height). Test = are in-between values possible. | 3 MARKS |
| 45% | Bases / types of classification — Geographical, chronological, qualitative, quantitative — define each with one example. | 4 MARKS |
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