Method of Teaching

Use the Blackline Masters 1.1 and 1.2 to create overheads for entering one variable data sets that are non-weighted and weighted. Go over in detail how to save data sets to and retrieve data sets.

Next, use the Blackline Masters 1.3 to create worksheets for the students. Have the students enter and save the non-weighted and weighted data sets for one variable. Use the topics For Discussion to supplement the worksheets.

Using Blackline Master 1.2

The creation of a non-weighted one-variable data set discussed above under Calculator Operations is presented on Blackline Master 1.1. The entering of a weighted one-variable data set appears on Blackline Master 1.2.

Turn the calculator on and press STAT to enter the statistics menu.

Touch A EDIT, press ENTER , to view the statistics data entry screen. Remove

old data by using the arrow keys to move to the list of data, and press ▲ to highlight the list label. Press DEL ENTER to delete the old data. Repeat for other lists of data.

Move the highlighter to the cell directly below the L1 in the table. Enter the following data set into L1 with the frequencies entered into L2. If a value appears three times within a data set, its weight or frequency is 3.

Enter the following data set using the weights: