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Statistics Calculator
Calculate comprehensive statistical measures including mean, median, mode, standard deviation, and more
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Understanding Statistics
Learn about the statistical measures and what they tell you about your data
Central Tendency
Mean
The average value of all data points. Sensitive to outliers.
Median
The middle value when data is sorted. Less affected by outliers.
Mode
The most frequently occurring value(s) in the dataset.
Spread Measures
Standard Deviation
Measures how spread out data points are from the mean.
Variance
The square of standard deviation. Shows data variability.
IQR
Interquartile Range. The spread of the middle 50% of data.
Distribution Shape
Skewness
- • Normal: -0.5 to 0.5 (symmetric)
- • Right-skewed: > 0.5 (tail extends right)
- • Left-skewed: < -0.5 (tail extends left)
Kurtosis
- • Normal: Around 0 (normal distribution)
- • Positive: > 0 (heavy tails, peaked)
- • Negative: < 0 (light tails, flat)