Prelims · 8 Mental Ability · 8.7 Data interpretation and sufficiency

8.7.7 Missing-data tables and Venn-based data interpretation

In a missing-data table, totals and averages are equations: fill one blank per row or column from them; in a Venn-based set, fill the regions from the centre outwards and use n(A ∪ B) = n(A) + n(B) − n(A ∩ B).

  • APPSC Group 2 · Prelims
  • Standard level
  • 8 min read
  • Full course

Key terms

  • missing data
  • row total
  • column total
  • balancing figure
  • average
  • corrected average
  • overall percentage
  • Venn diagram
  • two sets
  • three sets
  • only A
  • exactly two
  • neither
  • inclusion-exclusion
  • maximum overlap
  • minimum overlap
  • two-way table

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

Read the full note in the app. It is part of the APPSC Group 2 full course in Medha AI. Free in the app: the first chapter of each topic.

Read the full note in the app Mental Ability questions with answers

All Data interpretation and sufficiency notes · APPSC Group 2 syllabus · APPSC G2 Prelims Mock 1 with answers · Start free

Medha AI writes its own notes and checks them against the sources listed. Medha AI is an independent preparation service. It is not affiliated with, endorsed by or connected to APPSC, TSPSC, MPSC, UPSC or any other commission or government body.