Standard Error of sample standard deviation

[Arka Bose]

Hi all,
Pachamanova, BT notes refers to Standard error of sample standard deviation = sigma sqrt(1/2T)

Where is this formula coming from? I have no clue. Since ir refers to sample standard deviation, is it refering to sampling distribution of sample standard deviation which we know as chi squared distribution(i think)?
Please help

 

[Kaiser]

Hi,

Where do you explain how to
Calculate … mean, standard deviation, and variance of a variable. ???

I see the formula in the cheat sheet (p.35)

You use it to solve the question in the PDF R10.P1.T2 Miller (p25) but I do NOT see them in the study notes ... hence it makes me waste a lot of time to dig into another providers to find the proper formula.

Could you pls clarify ?


Rgds,

 

[Kaiser]

Actually off that,

Seems like the material is AFTER the questions and the formula are present at page 26.

May I suggest a slight reorganization of the questions, to put them after introducing the formula rather than before ?

Q1,2,3,4 seem misplaced.

Q5 looks ok, after the material.

Rgds,
Pascal