← Back to all toolsMathematics · Class 9–10+2
Statistics Calculator
Enter any data set and instantly get Mean, Median, Mode, Range, Variance and Standard Deviation — with full step-by-step working and a frequency bar chart.
Mean x̄MedianModeRangeVariance σ²SD σ
💡 Separate values with commas or spaces — up to 200 numbers.
Quick examples:
9 values detected
📐 Central Tendency
- Mean — sum ÷ count; sensitive to outliers
- Median — middle value; robust to outliers
- Mode — most frequent; can be multiple or none
- For symmetric data: Mean ≈ Median ≈ Mode
📏 Spread / Dispersion
- Range = Max − Min (simple, but outlier-affected)
- Variance σ² = avg squared deviation from mean
- SD σ = √Variance; same unit as data
- Low SD → data close to mean; High SD → spread out
📦 Quartiles & IQR
- Q1 — 25th percentile (lower quartile)
- Q3 — 75th percentile (upper quartile)
- IQR = Q3 − Q1; the middle 50% of data
- Outlier check: value < Q1 − 1.5×IQR or > Q3 + 1.5×IQR