1. In question 4, you calculated a mean and standard deviation of number of supermarkets for a sample of 40 zip codes. While this random sample was taken from the Census Bureau, they only had a list of the total supermarkets for 240 of NC's 1080 zip codes. This page show access to supermarkets by mileage and/or vehicle access only. If means the other 839 zip codes have no supermarkets, what do you wonder about when you reflect on the map?

https://www.ers.usda.gov/data-products/food-access-research-atlas/go-to-the-atlas/