Standard Deviation Calculator

Population · Sample · Variance · SEM · CV · Quartiles · Confidence Interval

Enter data (comma or space separated)

sample (default) population: check below

Sample (n-1) Population (N)

Statistics n = 5

Mean (μ/x̄)19.40

Std Dev6.73 sample

Variance45.30

Std Error (SEM)3.01

Coeff. of Var (CV)34.7%

95% CI (mean)[11.94, 26.86]

Q1 / Median / Q313.50 / 18.00 / 26.00

Step-by-step (sample) Mean = 19.40 · sum squared deviations = 181.20 · variance = 45.30 · std = 6.73

Pie Chart Maker

Editable title · legend · colors · 3D · download

Color Palette

Style

3D Effect

Title

Editable title · legend · colors · horizontal/vertical · download

Color Palette

Bar Style

Title

Nepal Electricity Authority · tariff rates updated Aug 2026

Ampere rating

Units consumed (kWh)

Rs. 335

Minimum chargeRs. 50.00

Energy chargeRs. 335.00

VAT (5% of cost above 50 + min charge)Rs. 0.00

Total (incl. VAT)Rs. 335.00

✅ VAT exempt (up to 50 units)

* Residential 5–60 A · Total = min charge + energy charge + VAT · effective 17 July 2026

Explore our suite of statistical calculators and visualizers