Question

Sample investigatory project on smoking

Answer 1

To carry out an investigatory project on smoking in any given locality, it would be appropriate to obtain sales data from the local vendors of cigarettes or bidi. The vendors would provide with stratified data as they cater to a cross section of people across various age groups in the locality .
 
If households were surveyed, a bias would creep in to the data as in Indian households the young would not be forthcoming with the truth if they live with older people due to customary reasons.