DashboardTake TestAI TutorPaper CheckLevelsConceptsNotesAmendmentsSecrets 🔐LibraryPlannerStudy DeskFree ResourcesAnalyticsResultsBankPricing

Quantitative Aptitude (Maths, LR, Stats)

Ch 4 · Measures of Central Tendency & Dispersion

5 concept points · 6 formulas · 4 exam-critical points.

📘
Concept
🗺️
Chart Summary
🧮
Formula Sheet
Important Points

🧮 Formula sheet

  1. 1.Arithmetic Mean = Σx / n
  2. 2.Median (grouped) = L + [(n/2 − cf)/f] × h
  3. 3.SD = √[Σ(x − x̄)² / n]
  4. 4.Variance = SD²
  5. 5.Coefficient of Variation = (SD / Mean) × 100
  6. 6.GM = (x₁ · x₂ · ... · xₙ)^(1/n)

Want more depth on formula sheet?

Make it click

← All chapters