Khan Academy

Stem and leaf plots review (K-A)

Stem-and-leaf plots (K-A)

Box plot review (K-A)

Constructing a box plot (K-A)

Identifying outliers with the 1.5xIQR rule (K-A)

Interpreting box plots (K-A)

Judging outliers in a dataset (K-A)

Reading box plots (K-A)

Worked example: Creating a box plot (even number of data points) (K-A)

Comparing range and interquartile range (IQR) (K-A)

Worked example: Creating a box plot (odd number of data points) (K-A)

Interquartile range (IQR)-video (K-A)

Interquartile range review (K-A)

Calculating the mean (K-A)

Choosing the "best" measure of center (K-A)

Mean, median, & mode example (K-A)

Mean, median, and mode review (K-A)

Statistics intro: Mean, median, & mode (K-A)

Comparing means of distributions (K-A)

Review and intuition why we divide by n-1 for the unbiased sample variance (K-A)

Impact on median & mean: increasing an outlier (K-A)

Simulation providing evidence that (n-1) gives us unbiased estimate (K-A)

Impact on median & mean: removing an outlier (K-A)

Simulation showing bias in sample variance (K-A)

Mean as the balancing point (K-A)