[10 Mark Questions , Answer appropriately ]

( I need short and concise answer , at the same time all the important points should be covered . need correct answer worth of getting 10 marks in exams . for instance , 10 to 15 important points = 10 marks in exams)

{ This question is exactly from the subject , " Business Research Methods" }

QUESTION -

Explain critically the different experimental methods for data collection .