Question

1. a candy store owner wants to know the overall thoughts of customers in her store. she asks the first 20 customers who come into her store on a monday morning and ask them to rate there store experience on a scale of 1 to 10. her customers average response was a 8.8 and she concludes that all her customers have positive thoughts about her store. her conclusion is:

a) invalid, since the customers were chosen by convenience
b) unfair because she owns the store
c) spot on!
d) valid, since customers were chosen randomly

Explanation:

The store owner used a convenience sample (first 20 customers on a Monday morning). Convenience sampling is a non - random sampling method. A non - random sample may not be representative of the entire customer population (e.g., customers on other days or at other times may have different opinions). So, the conclusion drawn from a convenience sample is not valid for generalizing to all customers.

Answer:

a) invalid, since the customers were chosen by convenience