## Asking a pupil [RSABE / ABEL]

Dear Detlew,

thank you for the answer. I had read the whole article but I am still not getting it

Partial replicate design is a crossover design so we can get S

So why cant we get S

S

as we only have one unknown (S

--> Refering to this, if we know that the sum (S

BEQool

thank you for the answer. I had read the whole article but I am still not getting it

Partial replicate design is a crossover design so we can get S

^{2}_{W}(and consequently CV_{W}) and because R is replicated we can also get S^{2}_{WR}(and consequently CV_{WR}).So why cant we get S

^{2}_{WT}(and consequently CV_{WT}) from the following equation:S

^{2}_{W}=(S^{2}_{WT}+S^{2}_{WR})*2as we only have one unknown (S

^{2}_{WT})?*"There is an infinite number of combinations of CVwT- and CVwR- values giving the same pooled CVw. We simply don’t – and can’t – know the variance components.*

It’s like asking a pupil “We added two numbers and their sum was five. What were the two numbers?” Leaves the pupil – rightly – dazed and confused."It’s like asking a pupil “We added two numbers and their sum was five. What were the two numbers?” Leaves the pupil – rightly – dazed and confused."

--> Refering to this, if we know that the sum (S

^{2}_{W}) is 5 and one other number (S^{2}_{WR}; lets say it is 3), we can get the unknown number (S^{2}_{WT}; in this case we get 2)?BEQool

### Complete thread:

- homoscedasticity assumption in RSABE method WinnieH 2023-08-18 08:57 [RSABE / ABEL]
- heteroscedasticity in RSABE (and ABEL) Helmut 2023-08-18 11:23
- heteroscedasticity in RSABE (and ABEL) WinnieH 2023-08-18 13:05

- homoscedasticity assumption in RSABE method BEQool 2023-08-18 12:30
- Asking a pupil d_labes 2023-08-18 14:11
- Asking a pupilBEQool 2023-08-18 17:16

- Asking a pupil d_labes 2023-08-18 14:11

- heteroscedasticity in RSABE (and ABEL) Helmut 2023-08-18 11:23