Explain the Sources of Bias in Sampling

Essay

Explain the Sources of Bias in Sampling
-A local hardware store wants to know if its customers are satisfied with the customer service they receive. The store posts an interviewer at the front of the store to ask the first 50 shoppers who leave the store, How satisfied, on a scale of 1 to 10, were you with this store s customer service Determine the type of bias.