Descriptive Statistics Calculator (Mean, Median, SD…)

Local Processing

Paste a list of numbers once and get count, sum, mean, median, mode, min/max, variance, standard deviation, quartiles, IQR and more.

Numbers List

List of numbers, comma-separated

Variance Mode

Trim Percentage per Tail (%)

Between 0 and 49

Count: 4
Sum: 10
Mean: 2.5
Median: 2.5
Mode: 1, 2, 3, 4
Minimum: 1
Maximum: 4
Range: 3
First Quartile (Q1): 1.75
Third Quartile (Q3): 3.25
Interquartile Range (IQR): 1.5
Variance: 1.25
Standard Deviation: 1.11803398875
Coefficient of Variation (%): 44.72135955
Mean Absolute Deviation: 1
Median Absolute Deviation: 1
Root Mean Square (RMS): 2.73861278753
Geometric Mean: 2.2133638394
Harmonic Mean: 1.92
Trimmed Mean: 2.5

Formula

descriptive summary of one list: n; sum; mean=sum(values)/n; median; modes=all values with the maximum frequency; min; max; range=max-min; variance/sd with population(n) or sample(n-1) denominator, omitted (with cv) in sample mode when n<2; q1,q3 by R-7 linear interpolation; iqr=q3-q1; cv=sd/abs(mean)*100 omitted when mean=0; mean absolute deviation=mean(abs(x-mean)); median absolute deviation=median(abs(x-median)); rms=sqrt(sum(x^2)/n); geometric mean exp(mean(ln x)) omitted when any x<0 and 0 when any x=0; harmonic mean n/sum(1/x) omitted when any x=0 or sum(1/x)=0; trimmed mean drops floor(n*p/100) from each tail, omitted when nothing remains

2026-09-26 owner-approved merge: replaces the separate 중앙값·최빈값·최소/최대·표준편차·분산·IQR·Geometric/Harmonic Mean·RMS·Trimmed Mean·Five Number Summary·Mean/Median Absolute Deviation·Coefficient of Variation formulas with one summary.

How It Works & Processing Standards

Enter values above to calculate results automatically. Check each input field for guidance and units.

Example: Numbers List = [1, 2, 3, 4], Variance Mode = population, Trim Percentage per Tail (%) = 10 → Count = 4, Sum = 10, Mean = 2.5, Median = 2.5, Minimum = 1, Maximum = 4, Range = 3, First Quartile (Q1) = 1.75, Third Quartile (Q3) = 3.25, Interquartile Range (IQR) = 1.5

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Shows the basic statistics of one number list in a single table. Choose population or sample, and a trimmed mean is included.

Variance and SD divide by n (population) or n − 1 (sample). Quartiles use the R-7 method, the same as Excel QUARTILE.INC.

What You Can Do

Center: Mean, median, mode, trimmed mean
Spread: Variance, standard deviation, coefficient of variation, mean absolute deviation, range
Position: Minimum, maximum, first and third quartiles, interquartile range (IQR)

How to Use Descriptive Statistics Calculator (Mean, Median, SD…)

1
Paste numbersSeparate with commas, spaces or new lines. A spreadsheet column pastes as is.
2
Choose a methodPopulation if you have every value; sample (divides by n − 1) if the data is a subset.
3
Read and copyCheck the table and copy single values or the whole table.

Examples

Weekly visitors (sample)

Input: 12, 15, 15, 18, 20, 22, 30

Result: Mean 18.8571428571, median 18, SD 5.95618925792

Three test scores (population)

Input: 70, 80, 90

Result: Mean 80, SD 8.16496580928

Common Use Cases

Summarizing test scores or survey answers
Spotting outliers in sales or traffic with the IQR
Reporting repeated lab measurements

Frequently Asked Questions (FAQ)

Should I choose population or sample?

If you have every value you care about (a whole class), choose population. If the values are a subset such as survey responses, choose sample; it divides by n − 1, so the variance is slightly larger.

Why are several modes shown?

If several values share the highest count, all of them are shown. If every value appears once, every value is a mode.

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