More coins Suppose the class in Exercise 11 repeats the coin-tossing experiment. a) The students toss the coins 25 times each. Use the 6895 99.7 Rule to describe the sampling distribution model. b) Confirm that you can use a Normal model here. c) They increase the number of tosses to 64 each. Draw and label the appropriate sampling distribution model. Check the appropriate conditions to justify your model. d) Explain how the sampling distribution model changes as the number of tosses increases.

1/13/16 – 1/15/16 CHAPTER 1: WHERE DOES DATA COME FROM Individuals things, “subjects”, “participants” objects described by data building blocks of data doesn’t have to be living Variables any characteristic of the individual (have different values) 1. Categorical variable puts individuals into specific groups 2. Quantitative variable takes numeric values for arithmetic operations (add & average) Ex: age, weight, & height, test scores… WAYS TO COLLECT DATA 1. Observational study observes individuals measures variables DOES NOT GET INVOLVED WITH PARTICIPANTS