Many sciences rely on observation instead of (or in addition to) designed experiments. Compare the data quality issues involved in observational science with those of experimental science and data mining.

For the answer:

A) List 2drawbacks involved in observational science. Explain each drawback with One sentence.

B) List 2drawbacks involved inexperimental science. Explaineachdrawback with One sentence.

C) Explain in less than four sentences why would you prefer one approach over the other (observational and experimental approach).