ap stat ch 1

ap stat ch 1 - X X X X X X X X X X X X X X X X X AP...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
X X X X X X X X X X X X X X X X X AP Statistics Solutions to Packet 1 X Exploring Data Displaying Distributions with Graphs Describing Distributions with Numbers X X X X X X X X X X X X X X
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 HW #1 1 - 4 1.1 FUEL-EFFICIENT CARS Here is a small part of a data set that describes the fuel economy (in miles per gallon) of 1998 model motor vehicles. Make and Model Vehicle Type Transmission Type Number of Cylinders City MPG Highway MPG : BMW 3181 Subcompact Automatic 4 22 31 BMW 3181 Subcompact Manual 4 23 32 Buick Century Midsize Automatic 6 20 29 Chevrolet Blazer Four-wheel drive Automatic 6 16 30 : (a) What are the individuals in this data set? The individuals are vehicles (or “cars”) (b) For each individual, what variables are given? Which of these variables are categorical and which are quantitative? The variables are: vehicle type (categorical), transmission type (categorical), number of cylinders (quantitative), city MPG (quantitative), and highway MPG (quantitative). 1.2 MEDICAL STUDY VARIABLES Data from a medical study contain values of many variables for each of the people who were the subjects of the study. Which of the following variables are categorical and which are quantitative? (a) Gender (female or male) categorical (b) Age (years) quantitative (c) Race (Asian, black, white, or other) categorical (d) Smoker (yes or no) categorical (e) Systolic blood pressure (millimeters of mercury) quantitative (f) Level of calcium in the blood (micrograms per milliliter) quantitative 1.3 You want to compare the “size” of several statistics textbooks. Describe at least three possible numerical variables that describe the “size” of a book. In what units would you measure each variable? Possible answers (units): • Number of pages (pages) • Number of chapters (chapters) • Number of words (words) • Weight or mass (pounds, ounces, kilograms . . .) • Height and/or width and/or thickness (inches, centimeters . . .) • Volume (cubic inches, cubic centimeters . . .) 1.4 Popular magazines often rank cities in terms of how desirable it is to live and work in each city. Describe five variables that you would measure for each city if you were designing such a study. Give reasons for your choices. Possible answers include: unemployment rate, average (mean or median) income, quality/availability of public transportation, number of entertainment and cultural events, housing costs, crime statistics, population, population density, number of automobiles, various measures of air quality, commuting times (or other measures of traffic), parking availability, taxes, quality of schools.
Background image of page 2
3 HW #2 5, 6, 7, 9 1.5 FEMALE DOCTORATES Here are data on the percent of females among people earning doctorates in 1994 in several fields of study. Computer science 15.4% Life sciences 40.7% Education 60.8% Physical sciences 21.7% Engineering 11.1% Psychology 62.2% (a) Present these data in a well-labeled bar graph.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/26/2011 for the course MATH 456 taught by Professor 1234 during the Spring '11 term at Huntingdon.

Page1 / 22

ap stat ch 1 - X X X X X X X X X X X X X X X X X AP...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online