Ethnography is the most common form of research, which relies on what is seen in the field and in naturalistic settings more than it does on statistical data

Ethnography is the most common form of qualitative research, which relies on what is seen in the field and in naturalistic settings more than it does on statistical data. In qualitative research, the researcher would give more focus on what is really seen on the seen based on his observations. He does not necessarily rely on the statistics of the occurrence of that certain event though it may be vital for some part.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.