Percentile Calculator — Data Statistics & Quartile Tool

Percentile & Statistics Calculator

Compute percentiles, quartiles, mean, median, standard deviation and more. Enter your dataset (comma‑separated) and get instant statistical insights.

Step 1: Enter Data Set

📊 Data tips

Enter any set of numeric values. Non‑numeric entries are ignored. The calculator will sort the data and compute percentiles using the selected method.

Step 2: Percentile Options

75th

ℹ️ About percentiles

The p‑th percentile is a value below which a given percentage (p) of the data falls. Linear interpolation gives smoother results for small datasets.

Percentile & Statistics Results

Summary
Five‑Number Summary
Detailed Stats

Requested Percentile Value

45.0
75th percentile (linear)
Data points (n)
12
Median (Q2)
32.5
Mean (average)
34.2
Std deviation (sample)
18.1

Five‑Number Summary & Quartiles

Minimum (Min)
5.0
First Quartile (Q1)
17.5
Median (Q2)
32.5
Third Quartile (Q3)
47.5
Maximum (Max) 60.0   |   IQR (Q3‑Q1) 30.0

Interpretation

The five‑number summary gives a quick overview of the data spread. The interquartile range (IQR) measures statistical dispersion.

Percentile Curve & Full Statistics

Formulas & methods

Percentile calculation (linear)

Rank = (P/100)*(n-1)+1. Interpolate between adjacent sorted values.
Nearest rank: value at ceiling(rank).

Variance (sample): 327.5 | Skewness: 0.12

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