📐Chapter Practice
Statistics — JEE Practice
15 practice questions across 1 topics. Filter by difficulty, solve topic-wise MCQs, and review detailed solutions.
1 Topics15 Questions
Measures of Central Tendency & Dispersion(15 Qs)
easy (5)
medium (5)
hard (5)
Q1Shortcut formula for variance: σ² = (Σxᵢ²)/n - x̄² means:Q2If data is shifted by constant c (each xᵢ → xᵢ + c), variance:Q3For combined mean of two groups (n₁, x̄₁) and (n₂, x̄₂):Q4Chebyshev's inequality states: at least 1-1/k² fraction of data lies within:Q5The mean deviation about mean is always ___ than standard deviation:
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