1. Warm Up
A 2007 Gallup Poll asked 1008 American adults if they planned to watch the Super Bowl. The pollsters also asked those who planned to watch whether they were more interested in the game or the commercials.
Men Women
Watch Game
Watch Commercials
Won’t watch
Describe any significant differences or similarities between men and women in this study.

2. AP Classroom Sign-up
Go to and sign-in using your College Board Username and Password.
Select “Join a Course or Exam” and select our class.
Join Code:
This will give you access to many resources from College Board related to AP Stats, including practice test questions for each unit.

3. Quantitative Data
Quantitative Data – A data set where the measured or observed values for each individual are numeric. Also, calculations with those numeric values make sense (finding average, larger number vs. smaller number, etc.)
Types of Quantitative Data:
Discrete Quantitative Data – Only certain values are allowed for the data (often integer values).
Continuous Quantitative Data – Any numerical value is possible for the data. Anything that is measured (length, weight, time, etc.) is usually continuous.

4. Displaying Quantitative Data
Types of Displays
Dotplot
Stemplot
Histogram
Boxplot
Objective: The display of quantitative data should help the reader understand the data set and gain insight into the data set. Displays should be clear, legible and useful for a reader.

6. Data Collection Ping Pong Ball Toss.
Line up behind the tape and toss 5 ping pong balls at the square on the carpet.
Count the number of tosses that land inside the square.
Write the number of tosses inside the square on the board under “Boys” or “Girls.” (no names)

7. Ping Pong Ball Toss – Displaying the Data
Make 2 dotplots using the ping pong ball toss data, one for boys and one for girls.
Comment on any similarities and differences in the plots.

8. Data Collection Measure your pulse rate
Find your pulse at your neck and count the number of beats in 30 seconds.
Multiply by 2 to get beats per minute.
Measure your pulse 3 times and take the average (round to nearest beat).
Write your pulse rate on the board under “Boys” or “Girls.” (no names)

9. Pulse Rate Measurement – Displaying the Data
Make 2 stemplots using the pulse rate data, one for boys and one for girls.
Comment on any similarities and differences in the plots.

10. Analyzing Distributions
When asked to analyze or comment on a distribution, always use SOCS.
Shape – a distribution may be “roughly symmetric,” it may be “uniform”, or it may be “skewed.”
Outliers – data points that are far from the other points
Center – the “typical” value of the distribution, often the mean or median
Spread – range of values covered by the distribution.

11. Analyze Pulse Rate Stemplots
Analyze and compare the distributions of pulse rates for boys and girls in the class. Use SOCS for your analysis and remember to compare the distributions.

12. Closure
1) Describe a data set that would be better described by a dotplot than a stemplot. 2) Describe a data set better described by a stemplot than a dotplot.