Math & Statistics Tools

source code -> GitHub

You can try all functions on the console (for Google Chrome, press F12 key to open)
Each answer displayed below can be copied to clipboard just by clicking.
[list of JS functions]

+ What do you want to do?

ー Basic Statistical Values

basic values
df=N-1 mean SD SEM median skewness
- - - - - -

+ Normality Test

ー Welch's t-test & F-test

Welch's t-test
t-value df p(|t|≤x) Cohen d
- - - -
F-test of 2 variances
F-value p(F≤x) p(x≤F)
- - -

ー Normal & t distribution

z-score to p

p(z≤x)
p(0≤x≤z)
p to z-score

z [p(z≤x)]
z [p(0≤x≤z)]
t-value to p

p(t≤x)
p(0≤x≤t)
p to t-value

t [p(t≤x)]
t [p(0≤x≤t)]

ー χ2 & F distribution

χ2 to p

p(χ2≤x)
p(x≤χ2)
p to χ2

χ2
χ2
F-value to p

p(F≤x)
p(x≤F)
p to F-value

F-value
F-value

+ χ2 test (goodness of fit)

+ χ2 test (independence) & Residual Analysis

+ 1-way ANOVA

+ 2-way ANOVA w/o replication

+ 2-way ANOVA with replication

+ Poisson & Gamma Distribution

+ misc