page+47


 * Aim:** How do we organize data using frequency tables, stem-and-leaf plots, and histograms?

At the end of the lesson, you will be able to... 1. organize data in a frequency table 2. draw a histogram by hand for a given set of data 3. use the graphing claculator to draw a histogram for a given set of data 4. organize data in a stem-and-leaf plot 5. compare and contrast the advantages of organizing data in frequency tables, stem-and-leaf plots, and hostograms 6. define mean, median, and mode 7. find the missing value in a data table given the mean, median, and mode.

media type="youtube" key="e_DQnzdU9KY" width="425" height="350"
 * How to create a frequency table and a histogram by hand**

media type="youtube" key="qv-wXo_4uXk" width="425" height="350"
 * How to enter data in your graphing calculator**

media type="youtube" key="839OzHIsI-E" width="425" height="350"
 * How to create a stem-and-leaf plot by hand**

media type="youtube" key="vqHEFqKU5gQ" width="425" height="350"
 * How to find mean, median and mode of grouped data**


 * Classwork:** Complete the following problem. Draw a stem-and-leaf and a histogram by hand. Also, graph the histogram using the graphing calculator.

[|Classwork p. 47.doc]


 * Homework:** 3- 11 odd, 19

[|s_n_l_histo.JPG]

[|s_n_l_histo_2.JPG]


 * Answers:**

[|A-snl_hsito1.JPG]

[|A-snl_histo2.JPG]


 * Journal entry:** Data points in a experiment often repeat. Frequency tables allow us to organize the data into a compact table. To find the mdeian score, the middle score must be located. How is it possible to use a frequency table to locate a median?