Question

Recent developments in the general body of scientific literature has suggested that many new population based studies are intentionally over-representing particular demographics in order to gain more information about particular sub-populations that have been historically under-represented in the literature. One particular study decides that in order to compensate for this historical issue, they will seek out particular sub-populations and solicit their involvement in their study.

Please describe what type of bias is being compensated for in the above scenario.

Answer 1

If this particular study decides that in order to compensate for under-represented in the literature on the basis of

past surveys and they will seek out particular sub-populations and solicit their involvement in their study then their

may may be over-representation of this particular groups in the current surveys and the bias may introduced in the

surevy. The sampling based on the predetermined issued affect the property of randomness and biased in survey may occure.