1. Common Core Math I Unit 1 Day 1 One-Variable Statistics

2. Number of Siblings
Give each student a small sticky note and ask them to write down the number of siblings that they have. (Do not tell them whether to count step- or half-siblings. When it comes up, let them decide as a group. This brings out the idea of clearly defining what/how you are measuring things.) Have them place the sticky notes on the number line, stacking repeats. Discuss how they have created a dot plot of the data.
Ask students to describe the distribution of number of siblings (shape, center, spread, outliers).
Also make a point to discuss spacing between “dots” and how it is important for them to be equal spaced.

3. How Many Buttons Are You Wearing???
On your own paper to turn in make a
number line that can be used to record this
data. (where should it start?
How far should it go?
What should the scale be?)
3. Record your info on your number line.
4. Record 10 other classmates information.
5. Below your dot-plot write a description of the data. REMEMBER SHAPE, CENTER, SPREAD, OUTLIERS
Discuss. Have one person from each table read description.

4. Dotplot Histogram
Can be used for both categorical or quantitative data
Good for a rough sketch of data
Only used for quantitative data
Histograms have continuous intervals for data.
Good for larger data sets.

5. Making A Histogram on your Calculator

6. Making A Histogram on your Calculator

7. Making A Histogram on your Calculator

8. Making A Histogram on your Calculator

9. Fast Food Histograms Work with your neighbor.
Using one fast food card,
create a histogram on your
calculator of the number of
Calories in each sandwich.
On a separate piece of paper describe the data. REMEMBER: SOCS!
Repeat for 3 (total) fast food restaurants. Turn in 3 descriptions per pair.

10. Exit Ticket
What is important to include in a description of a data distribution?
Describe two of the four shapes of data distributions. For each type give an example of a data set that would have that shape (not the actual data, just a description).
When is it better to make a histogram vs. a dot plot?