Bioequivalence and Bioavailability Forum

GNU addiction [General Sta­tis­tics]

posted by Helmut  – Vienna, Austria, 2011-10-02 05:20 (5018 d 10:35 ago) – Posting: # 7406
Views: 15,982

Dear ElMaestro!

❝ A great paper comparing certain numeric precision aspects here.

THX for reminding about this paper. Had to give Gnumeric (1.10.16) another try. Wow! Have a look at its functions. tinv() does not round dfs!
df     tinv(0.05,df)
5      2.5705818356364616
5.123  2.5521289049159468
6      2.4469118511451238

There are two implementations of the inverse β-distribution: betainv() for Excel/OO Calc compatibility and r.qbeta() calling R’s algo. However, results are identical:
betainv(0.001,2,4)=r.qbeta(0.001,2,4)=0.010101787883737754

Now to your example:


Looking at the formulas behind it’s clear: Welcome to Welch’s test!


        Welch Two Sample t-test

data:  log(TEST) and log(REF)
t = 0.0596, df = 3.876, p-value = 0.9555
alternative hypothesis: true difference in means is not equal to 0
90 percent confidence interval:
 -0.1196929  0.1265074
sample estimates:
mean of x mean of y
 3.568160  3.564752

---

Rulez!

—
Dif-tor heh smusma 🖖🏼 Довге життя Україна! 
Helmut Schütz


The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes

Complete thread:

• Welch/Satterthwaite in practice ElMaestro 2011-09-21 17:04 [General Sta­tis­tics] 
  • Not to round is the question d_labes 2011-09-22 09:11
    • my problem ElMaestro 2011-09-22 12:34
      • Ways out d_labes 2011-09-27 11:54
  • Welch/Satterthwaite in practice yicaoting 2011-09-29 16:29
    • Welch/Satterthwaite in practice ElMaestro 2011-09-29 17:39
    • Spreadshit addiction Helmut 2011-09-30 16:52
      • what a divine post! ElMaestro 2011-09-30 18:54
        • what a divine post! Helmut 2011-09-30 19:41
          • what a divine post! ElMaestro 2011-10-01 13:03
            • what a divine post! Helmut 2011-10-01 13:20
      • Spreadshit addiction yicaoting 2011-10-01 05:36
        • Spreadshit addiction ElMaestro 2011-10-01 11:13
          • GNU addictionHelmut 2011-10-02 03:20
        • Spreadshit addiction Helmut 2011-10-01 13:03
          • Spreadshit addiction yicaoting 2011-10-01 16:39
          • Spreadshit addiction yicaoting 2011-10-03 07:23
            • Spreadshit addiction Helmut 2011-10-03 15:59
              • Spreadshit addiction yicaoting 2011-10-03 17:35
                • Spreadshit addiction Helmut 2011-10-03 17:41