Learn Updated 2026-03-01 UTC

Statistics Calculator — Descriptive Stats, Correlation & Regression

Statistics calculator for mean/median/SD, correlation, and linear regression with notebook-first workflows and explainable outputs.

Use the Statistics Calculator for descriptive statistics and simple modeling workflows (correlation and regression) with clear, educational outputs.

Open Statistics Calculator Use Notebook Guides

Important: Educational use only. Statistics interpretation depends on context and assumptions; cross-verify methodology for real decisions.

What this calculator is

The Statistics Calculator is an interactive tool inside GetCalcMaster. It’s designed to help you explore scenarios, understand formulas, and document assumptions.

Key features

Descriptive stats (mean, median, variance, SD)
Correlation and simple linear regression
Notebook-friendly for documenting datasets and notes

Formula

Mean x̄ = (Σx_i)/n
Sample stdev s = √( Σ(x_i−x̄)² / (n−1) )
Correlation r = cov(X,Y)/(σ_X·σ_Y)

Quick examples

Data [2,4,4,4,5,5,7,9] → mean=5, median=4.5, mode=4
Same data → σ=2.0 (population), s≈2.138 (sample)
Perfect line y=2x → correlation r=1

Verification tips

Decide “sample vs population” before interpreting stdev/variance.
Plot the distribution; summary stats can hide structure/outliers.
Keep raw data in Notebook for reproducibility.

Common mistakes

Mixing sample and population formulas.
Drawing causal conclusions from correlation.
Using summary stats without checking for outliers or skew.

How to use it (quick steps)

Paste or enter your dataset (numbers) in the requested format.
Select the statistic or test you want to compute.
Review the result and interpret it in context (units, assumptions, sample size).
Record methodology and inputs in Notebook so you can reproduce the calculation later.