Topic A: Lesson 3: Estimating centers and interpreting the mean as a balance point

Once you know the basics of how to calculate the mean and median, you can start to think deeper about more advanced concepts. This tutorial covers how to find the mean and median from a data display, how new data points impact the mean and median, and how to find missing values given a mean.

Comparing means of distributions

Means and medians of different distributions

Calculating the mean: data displays

Calculating the median: data displays

Impact on median & mean: removing an outlier

Impact on median & mean: increasing an outlier

Effects of shifting, adding, & removing a data point

Missing value given the mean

Missing value given the mean