1. WARM UP Find the mean, median, mode, and range 1. 5, 10, 19, 34, 16, 13 2.7, 22, 304, 425, 219, 304, 22, 975 When you are done the warm up put the calculator away

2. ALGEBRA 3 CHAPTER 7 LESSON 7: STATISTICS AND STATISTICAL GRAPHS

3. VOCAB Statistics – numerical values used to summarize and compare sets of data Measures of central tendency – mean, median, mode Mean – average (symbol is drawn on the board) Median – middle number Mode – most repeated Measure of dispersion – tells how spread out the data will be Range – difference between big and small Standard deviation – difference between mean and individual data

4. VOCAB Box-and-whisker plot – SEE THE BOARD Lower quartile – median of the lower half Upper quartile – median of the upper half Interquartile Range - difference between upper and lower quartiles Histogram – bar graph with equal intervals Frequency – how often something occurs Frequency of distribution - displays frequency of intervals

5. FORMULA Standard Deviation  SEE THE BOARD

6. DIRECTIONS HAVE A LOT OF PATIENCE  These problems are very long!!! On a good note…your homework won’t ask for all  So pay attention to the directions.

7. I DO (STATS) FIND ALL STATISTICS

8. WE DO (STATS) FIND ALL STATISTICS

9. YOU DO (STATS) FIND ALL STATISTICS

10. REVIEW Today you learned…

11. HOMEWORK Worksheet