Please discuss the importance of constructing a proper sample from a population and what can happen to your data if you don't. For example: your doctor has put you on a new medication that has only been tested on middle-aged men living in Finland. Are you a member of the same population that they are? Would you be considered a sample member of their population? Please provide an example from your own profession. Please be sure to include the usefulness and limitations of this kind of sampling.