1. Materials Reminders

2. Get out your agenda if you see your name below. You need to come to my room tomorrow. Period 2Period 7

3. Solve the following inequalities for x.

4. 11-4 Measures of Central Tendency How do I find the mean, median, mode and range of a data set?

5. Questions:Notes: How do I find the mean of a data set? The sum of the data divided by the number of items in the data set. Example: 5, 9, 8, 7, 3, 10 When is the mean a good measure of central tendency? When there are no extreme values (outliers)

6. Questions:Notes: How do I find the median of a data set? Order the data set from least to greatest and find the middle number. If there is no middle number, find the mean of the two middle numbers. Example: 5, 9, 8, 7, 3, 10 When is the median a good measure of central tendency? When there are no extreme values (outliers), and there are no big gaps in the data set.

7. Questions:Notes: How do I find the mode of a data set? Order the data set from least to greatest and find the middle number. If there is no middle number, find the mean of the two middle numbers. Example: 5, 5, 8, 7, 3, 7, 7, 5 Reminder: there can be more than one mode When is the mode a good measure of central tendency? When there data set has many identical numbers.

8. Questions:Notes: How do I find the range of a data set? Subtract the smallest number in the data set from the largest number. Example: 2, 5, 7, 22, 26

9. On the left side of your Cornell Notes, find the mean, median and mode. Find the range of the data set. Which measure of central tendency best describes the data set? 22, 16, 11, 44, 55, 38

10. Homework Pg. 594-595; 5-10 and 12-14 AND Cornell Notes Summary