Explain observation and experimentation with help of an example.

    The Process of watching something or someone is known as observation. Normally the observation is informal action but maybe it also formal; plus includes the data collection. In observations, the researcher simply creates the observations and the conclusions are arrived on the basis of data. Example Study to calculate the relation of lung cancer and the smoking. For this scenario the researched collected the data from the smoker and non-smoker and make the observations according to statics.

Experimentation:

     Every aspect to deriving the conclusion in experimentation the researcher manipulates this. If more data is collected, then the researcher relies on this type of study. There is human intervention is present in experimentation. Example: Hawthorne study is the good example of experimentation. In study of Hawthorne plant for electric company, and see the impact of productivity and illuminations.  [3]

References  of an example. 

Differencebetween.Net, & Prabhat S. (2017, June 22). Difference Between Observational Study and Experiments. Retrieved from http://www.differencebetween.net/science/difference-between-observational-study-and-experiments/