A LEVEL STATISTICS DOUBT

[Belleflower101]

Hi!
When is it appropriate to use a normal approximation for a poisson distribution??
Wikipedia says when the lambda is greater than 10,

The textbook says when lambda is greater than 15,


From Examsolutions,


Which one is it?

 

[Belleflower101]

Anybody there?

 

[panpan101]

I believe it is >15. Well, that's what I normally use

 

[f_m_r]

Mark schemes usually, well most of the time show it as >15
¥ represents lambda.
If X~Po(¥)
¥>15 then X is approximately equal to Y~N (¥,¥)
Continuity Correction must be applied.