How do I draw control charts given several data samples of size n = 5?

I have 20 data samples each of size n=5. I want to draw the possible control charts. I have checked out the guideline on control charts but the details aren't so crystal for my understanding. Kindly provide an example that uses provisions such as described here. How do I represent my data as a collection X of the subgroups so that I use

controlchart(X) to obtain a control chart I desire in matlab?

Answer 1

[dpb]

Are the 20 samples time with the five replicates? If so, then simply

controlchart(X)

if

size(X) --> 20,5

in other words, arrange the data by column by observation, by time by row and you're basically done.

See

doc controlchart

for an example of such data.

If you've got another grouping variable, needs must see what/how you've got that to know anything else.

[Henry Ohanga]

Thanks buddy. It helped!