Curated OER
Stem-and-Leaf Plots
In this stem-and-leaf plots worksheet, 9th graders solve and complete 9 various types of problems. First, they determine the mean, median, and mode of the stem-and-leaf plot shown. Then, students summarize the similarities and...
Curated OER
Measure of Spread
Students identify the standard deviation. In this statistics lesson, students find the mean distribution and calculate the percent of deviation from the mean. They observe this change on the Ti calculator.
CK-12 Foundation
Ck 12: Algebra Ii: 6.3 Z Scores
See how Z-scores are related to the Empirical Rule from the standpoint of being a method of evaluating how extreme a particular value is in a given set.