The Fitbit Blaze Smart Fitness Watch has been ranked as the number one best$-$selling wearable technology device. This wearable technology tracks heart rate, and many activities such as running, biking, and cross training. It also monitors sleep patterns. The data can be synced with a phone app that summarizes and displays the user$$s information.

As the number one best$-$selling wearable, would this ranking be more likely based on a population or a sample?