If you do not get every member from the sampling frame to respond, a non response error problem may arise because data is not collected from all respondents selected for a sample.
Option A
Explanation:
A type of non observation present in many overviews. Non response implies inability to get an estimation on at least one examination factors for at least one components k chose for the review.
The term envelops a wide assortment of explanations behind non observation: "difficult to contact", "not at home", "unfit to reply", "inadequacy", "no-nonsense refusal", "out of reach", "un returned survey", and others. In the initial two cases contact with the chose component is rarely settled.
Non-reaction prompts an expansion in fluctuation because of a decrease in the genuine size of the example and the response to attribution. This creates an inclination if the non-respondents have qualities of intrigue that are not quite the same as those of the respondents.
Besides, there is a danger of essentially thinking little of the inspecting mistake, whenever attributed information are treated just as they were watched information.