Final answer:
A collection of objects, places, or people with common properties or qualities is called a set. Mean, median, and mode are measures used in determining the central tendency of a data set, with the median often being more appropriate in the presence of outliers.
Step-by-step explanation:
A collection of objects, places, or people with common properties or qualities is called a set.
The terms such as mean, median, and mode are various measures of the center of a data set. The mean is the average value obtained by dividing the sum of all the values by the number of values. The median is the middle value of an ordered data set, which effectively divides the data into two equal halves. The mode represents the most frequently occurring value(s) in a data set.
When a data set contains outliers or extreme values, the median is generally a better measure of center, as it is not unduly influenced by the extreme values.