1. CCM IA WARMUP Examine the distribution of the number of pennies stacked using their dominant hand by students in Ms. Smith’s first period Math 1A class. 1.How many students were in the first-hour class? 2.What percentage of students stacked more than 40 pennies using their dominant hand? 3.Describe the shape and center of the plot in context. 4. What do you think the plot for the second period class might look like? Explain. 23 12/23 = 0.5217… = about 52% Skewed left, 40-43 Varies

2. Homework Answers for U2D3 HW:

4. QUIZ

5. Common Core Math I Unit 2: One-Variable Statistics Measures of Center and Spread

6. Objective Students will be able to… Interpret data based on the shape of a data distribution Choose the appropriate measures of center (mean or median) and spread (standard deviation or interquartile range) to describe the distribution. Interpret summary statistics for center and spread in the context of the data.

7. Think About the Situation Discuss the following with your partner or group. Write your answers on your own paper. Be prepared to share your answers with the class. What do you think is the typical number of letters in the full names (first and last) of your classmates? What data do you need to collect and how would you collect it? How would you organize and represent your data? If a new student joined your class today, how might you use your results to predict the length of that student’s name?

8. Investigation 1: Dotplots vs. Histograms

9. Describing Data Two ways to describe data: Graphically Dot plot Histogram – Boxplot Numerically – Measures of Center – Measures of Spread

10. Describing Data Numerically Measures of Center – mean, median Measures of Spread – range, interquartile range, standard deviation S-ID.2 Use statistics appropriate to the shape of the data distribution to compare center (median, mean) and spread (interquartile range, standard deviation) of two or more different data sets.

11. Measures of Center What is the typical value?

12. Investigation 2: Finding the Median

13. Investigation 3: Experimenting With the Median Name Number of Letters Pete Thomas 10 Shaquana Smith Stewart Hughes Huang Mi Richard Lewis Virginia Bates Angel Mendoza Mary Wall Danielle Duncan Will Jones Ana Romero Jana Turner Huang Mi 7 letters

14. William Arthur Philip Louis Mountbatten-Windsor

15. Homework HW1: U2D4 HW