There is one interesting which comes in the cross sectional design is which is the kind of you can say closer to the multiple cross sectional design is a cohort analysis which is very important and what is the cohort?
क्रॉस सेक्शनल  डिजाइन जैसा  ही कोहॉर्ट  एनालिसिस होता  है , आइये  देखते  हैं की  यह  है  क्या ?