6.3 Pooled standard deviation in practice: estimating repeatability

[@gazzzada]

Thank you, Sir. Your explanations are pretty fundamental in sense of approach and your charism. I wish my sons met such a teacher

[@Parcosan]

May somebody tell me why at 3:50 the professor says that the pooled standard deviation calculated for all 14 measurements corresponds to the situation as we made 11 measurements on a single day and on a single sample? Thank you very much.

[@antoinetteaddison3443]

Very Nice job, but I still don't quite understand how you determine if the results are repeatable. Since the standard deviation for the measure on each day where similar to the pooled standard deviation then the results can be consider repeatable?

[@MrKeyant12]

Sir, i'm lil bit confuse between pooled SD & SD mean. what situation to use pooled SD calculation or what kind of data to use SD mean?

[@alpcetinkaya3656]

Don't we need to show that the variances of each days are equal to proceed pooling standard deviations?

[@yayraagbo4946]

thanks sir, this is very helpful

[@giftzulu912]

never mind=

[@zonko1912]

1, 2, 3 AhAhAh.