## Plausible to me too [Power / Sample Size]

Dear all.

It's exact! Power is nothing else than probability.

Simple example:

Similarly you have probability that 90% CI is in 80-100% (without 100%) = P1,

probability that 90% CI is in 100%-125% (without 100%) = P2,

then there is option when 90% CI is in 80-125% a 100% is in the 90% CI = P3,

there is nothing more (no other option which can happen), so the sum is the Classical Power (probability that you have 90% CI in 80-125%).

Classical Power=P1+P2+P3, where P3 is pwrDK222BE = Classical Power - P1 - P2.

P.S. ElMaestro was faster than me (but because I wrote it in different wording, I am posting it too ... hope for better understanding maybe)

It's exact! Power is nothing else than probability.

Simple example:

You have 1 dice and you roll once:

probability P1 of you roll 1 is 1/6,

similarly P23 is probability that you roll 2 or 3 is 2/6, and

P45 is probability that you roll 4 or 5.

Then P1+P23+P45=5/6.

I you add P6 as probability that you roll six, the sum is equal to 1.

Similarly you have probability that 90% CI is in 80-100% (without 100%) = P1,

probability that 90% CI is in 100%-125% (without 100%) = P2,

then there is option when 90% CI is in 80-125% a 100% is in the 90% CI = P3,

there is nothing more (no other option which can happen), so the sum is the Classical Power (probability that you have 90% CI in 80-125%).

Classical Power=P1+P2+P3, where P3 is pwrDK222BE = Classical Power - P1 - P2.

P.S. ElMaestro was faster than me (but because I wrote it in different wording, I am posting it too ... hope for better understanding maybe)

### Complete thread:

- Denmark Curiosa (1 in 90% CI in 0.8-1.25) zizou 2017-02-05 02:03 [Power / Sample Size]
- Kudos! Helmut 2017-02-05 19:16
- Kudos! ElMaestro 2017-02-05 21:15
- Joking! Helmut 2017-02-06 13:27
- Thanks, and DKMA ElMaestro 2017-02-06 13:46
- Power with a Danish twist Helmut 2017-02-07 15:23
- Danish ultra-conservatism d_labes 2017-02-08 10:57
- Danish ultra-conservatism Helmut 2017-02-08 11:47

- Danish ultra-conservatism d_labes 2017-02-08 10:57

- Power with a Danish twist Helmut 2017-02-07 15:23

- Thanks, and DKMA ElMaestro 2017-02-06 13:46
- Kudos to ElMaestro! d_labes 2017-02-06 15:06
- Plausible Helmut 2017-02-06 17:16
- Plausible to me too d_labes 2017-02-06 20:25
- Plausible to me too ElMaestro 2017-02-06 22:30
- Plausible to me toozizou 2017-02-06 22:42
- THX d_labes 2017-02-07 10:01

- Plausible to me too d_labes 2017-02-06 20:25

- Plausible Helmut 2017-02-06 17:16

- Joking! Helmut 2017-02-06 13:27

- Kudos! ElMaestro 2017-02-05 21:15
- 3D Helmut 2017-02-06 13:47
- Denmark Curiosa (1 in 90% CI in 0.8-1.25) d_labes 2017-02-06 14:54
- Denmark Curiosa (1 in 90% CI in 0.8-1.25) zizou 2017-02-08 21:03
- Alternative CI for BE decision d_labes 2017-02-09 11:18
- Alternative CI for BE decision ElMaestro 2017-02-09 11:36
- Alternative CI for BE decision d_labes 2017-02-09 11:48
- How decidedly odd ElMaestro 2017-02-09 13:28
- How decidedly odd zizou 2017-02-09 14:42

- How decidedly odd ElMaestro 2017-02-09 13:28
- Alternative CI for BE decision Helmut 2017-02-09 13:41
- No alternative d_labes 2017-02-09 20:37
- No alternative ElMaestro 2017-02-10 13:51
- No alternative? mittyri 2017-02-10 15:28
- Dinamarka? d_labes 2017-02-10 20:10

- OT: Czech beer d_labes 2017-02-10 19:57

- No alternative? mittyri 2017-02-10 15:28

- No alternative ElMaestro 2017-02-10 13:51

- No alternative d_labes 2017-02-09 20:37

- Alternative CI for BE decision d_labes 2017-02-09 11:48

- Alternative CI for BE decision ElMaestro 2017-02-09 11:36

- Alternative CI for BE decision d_labes 2017-02-09 11:18

- Denmark Curiosa (1 in 90% CI in 0.8-1.25) zizou 2017-02-08 21:03
- Denmark Curiosa (1 in 90% CI in 0.8-1.25): Gone Helmut 2019-11-08 12:47

- Kudos! Helmut 2017-02-05 19:16