Statistics

Skewness Calculator

Find the skewness of a small data set.

Value 1

Value 2

Value 3

Value 4

Value 5

Calculated Output

Skewness 0.0343

Mean 13.2

Formula: g₁ = (Σ(x−mean)³ ÷ n) ÷ σ³

Step-by-Step Breakdown

1. Values used:

2. Value 1 = 4

3. Value 2 = 8

4. Value 3 = 15

5. Value 4 = 16

6. Value 5 = 23

8. Skewness = 0.0343

9. Mean = 13.2

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The math behind it

g₁ = (average cubed deviation) ÷ σ³. Positive = right tail; negative = left tail; 0 = symmetric.

4,8,15,16,23 → ~0.13 (slightly right-skewed).

Zero skew?

Indicates a symmetric distribution (like the normal).