10/2/2015
Chapter 2: Displaying and summarizing a single variable
Problem 1: diet and prostate cancer revisited
a) This is a bivariate study. The two variables are the level of fish consumption and th
CHAPTER 5: PROBABILITY
4. Problem 4
Let A be the set of all American men with high cholesterol, let B be the set of all American
men with high blood pressure, and let S be the set of all American men.
Homework 3
October 9, 2015
Chapter 3: Displaying and summarizing relationships between two variables
Problem 1: Antidepressants and bone injury
14
=10.2 of them experienced fractures.
a) Of all the da
Vocabulary
Statistic: a summary calculated from a sample.
Parameter: characteristic of a pop., corresponds to a statistic.
5# summary: min, Q1, median, Q3, max.
Residual: difference between predicted
Vocabulary
Statistic: a summary calculated from a sample.
Parameter: A quality or quantity present in a population.
Joint distribution: a distribution showing counts for each
combination of two catego
Homework 3
October 16, 2015
Problem 3.10: Nutrition continued
a) A linear regression for the data is ^y i=89.65+2.485 x i .
b) The linear regression predicts that a cereal with 12 grams of sugar would