1. Describe Data Sets with Shape, Center, and Spread
Describe Data Sets with Shape, Center, and Spread

2. Do Now
If the two lowest scores were taken out of the following data set, what would happen to the mean? (increase, decrease, no change) What would happen to the standard deviation? (increase, decrease, stay the same) {12, 13, 25, 65, 66, 66, 67, 67, 67, 67, 67, 68, 68, 68, 68, 68}

3. Objective
I can describe the shape, center, and spread of a data set.
Agenda Do Now – Affect of Mean and S.D.(10) class
Standard Deviation Activity (30) groups
Homework Help (10) individual
Closure/Exit Ticket (10) class/individual

4. For your data set:
Create a visual representation of your data.
Describe the shape of your data.
Calculate the 3 measures of center.
Calculate the 3 measures of spread.
Decide which measures of spread and data are best for your data set.
Put all of your information neatly on a mini poster.
Present your findings to the class.

5. Presentation Sentence Starters
The shape of our data is ______________________.
The measure of center that best represents our data is ______________ because __________________.
The measure of spread that best represents our data is ______________ because __________________.

6. Which measurements use all of the data values in the calculation?
Exit Ticket
Which measurements use all of the data values in the calculation?