Programas estatísticos gratuitos

Para testes diversos:

https://www.jamovi.org/

https://www.danielsoper.com/statcalc/default.aspx

http://www.vassarstats.net/  (incluindo Kappa)

http://www.socscistatistics.com/tests/Default.aspx

Para calcular tamanho de efeito (effect size):

https://www.polyu.edu.hk/mm/effectsizefaqs/calculator/calculator.html

https://www.uccs.edu/~lbecker/

Ferramenta simples de calculo de poder e tamanho de amostra:

https://www.stat.ubc.ca/~rollin/stats/ssize/n2.html