Stats & Algebra
The student tier: describe a data set properly, then move up to row reduction and eigenvalues. Every tool writes out the full method — the deviation table, the row operations, the characteristic polynomial — so you can follow the argument, not just copy the answer.
Median Calculator
Enter your numbers and watch them sort themselves — the middle value is highlighted, and for even-sized lists the two-middle average is worked out in full.
Sort visualizedMean, Median & Mode Calculator
Paste in a data set once and get all three measures of centre — the equal-share mean, the middle-value median and the most-frequent mode — each with its working shown.
Three in oneVariance Calculator
How spread out is your data? Get the variance and standard deviation with the full deviation table worked out row by row.
Interpolation Calculator
Know two points on a line? Estimate any value between them — with the slope, the formula and the arithmetic all written out, plotted as you go.
RREF Calculator
Paste a matrix (optionally augmented with a constants column) and watch Gauss-Jordan elimination move by move — each row operation written out, each pivot highlighted.
Every row op shownEigenvector Calculator
Enter a 2×2 or 3×3 matrix and get its eigenvalues and eigenvectors with the full derivation — characteristic equation, roots, and the row reduction behind each eigenvector.
- 1Mean, median & mode — describe where a data set sits — and when the three disagree
- 2Variance — measure how spread out the data is around its mean
- 3Interpolation — estimate between known points — a proportion in disguise
- 4RREF — the row-reduction engine that powers half of linear algebra
- 5Eigenvectors — find a matrix's natural axes — built on RREF