What are three effects mining has on a region?

Ais a survey that focuses on only a small portion of the population, and the results are generalized for the larger population.

The answer is d the box plots show the data distributions for the number of customers who used a coupon each hour during a two-day sale. which measure of variability can be compared using the box plots? interquartile range standard deviation mean median

In the diagram below, ab and bc are tangent to o. what is the measure of