QuickHelp:How to compute the critical value of t distribution
From Howto Wiki
Use tinv(t, df) in the command window, for example, type tinv(0.05,15)=
in the command window
In addition, Origin also support critical value of other distributions
Distribution | Labtalk Function |
---|---|
Normal distribution | norminv(p) |
F distribution | finv(p, df1, df2) |
Beta distribution | betainv(p, alpha, beta) |
Chi Square distribution | chi2inv(p,df) |
Gamma distribution | gaminv(p, a, b) |
Weibull distribution | wblinv(p, a, b) |
Notes: The functions return the critical value for lower tailed probability. A two-tailed-value can be returned by replacing probablity with (1-probability/2) |
Keywords: critical value, distribution, t, f, beta, chi square, normal, beta, gamma, weibull