Calculate the mean, median, mode, and range for a data set.
Order a data set before locating its median value.
Predict how an outlier affects the mean, median, mode, and range differently.
What the lesson concludes
Mean is the total divided by the count; median is the middle value once ordered; mode is the most frequent value; range is the largest value minus the smallest.
Order the set first before finding the median, since the raw list order does not matter.
An outlier pulls the mean and stretches the range but leaves the median and mode largely unaffected.
A set can have no mode, one mode, or several, so do not assume every set has exactly one.
When a question mentions "average", it means the mean, unless it specifically says median or mode.