statistical control

Is there any way you can control for a variable using multiple regression? In order to see if the relationship reduces or disappears between an Iv and DV?

Hi, I have a thesis study about statistical quality control. I have data from a chemical factory manufacturing powder paint. They want to use control charts to check particle size distribution. Data is not micron but percentage of the particles. For example sample 1 is 3.456 and it means...

They never seem to get reported in psychology research papers? I read some descriptions of them and they seem so useful in terms of statistical control. So Friends, If they are not used, are there any alternative approaches for statistical control? I would love you if you could list them...