- Calculate mean and standard deviation.
Recall that as we analyze the graph of a distribution of a quantitative variable, we pay attention to the overall pattern (shape, center, and spread), in addition to the data points that deviate from the overall pattern (outliers).
Let’s look at values that can be used as a measure of center and standard deviation as a measure of spread.
The median of a data set is the middle value after all of the values have been arranged in ascending order.
Standard deviation is the “typical” distance of each data point from the mean of the data set.
Ages of Best Actress or Actor Winners from the Oscars
[latex]184[/latex] observations of the ages of the Best Actress or Actor winners from movies from the Oscars awards ceremonies can be found listed under the data set Oscars: Age in the statistical tool below.