The median is a better measure of center for the described data set because the data is right-skewed and not symmetric, meaning the median is less affected by the skew than the mean.
Choosing the Better Measure of Center
The dot plot shows the number of movies 15 people watched in a month. Given the data, we need to decide whether the mean or the median is a better measure of the center for this data. The dot plot includes the following number of movies watched: 2 people watched 0 movies, 2 watched 7 movies, 3 watched 8 movies, 3 watched 9 movies, and 5 watched 10 movies.
The mean is the arithmetic average of the data, while the median is the middle value when the data are arranged in order. For data that is skewed or has outliers, the median is often a better measure of center because it is not as affected by extreme values as the mean is.
In this case, the data clusters on the right and does not seem symmetric, indicating that it is right-skewed. Therefore, the median is likely a better representation of the center because it does not get pulled by the skew as the mean does. So, the correct answer is "Median; because the data clusters on the right and is not symmetric."