Introduction to Statistics, Think & Do 4.1th edition

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Scott Stevens
Publisher: Worldwide Center of Mathematics

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  • Chapter 1: Introduction
    • 1.1: Statistics and Data (12)
    • 1.2: Sampling (10)
    • 1.3: Lying with Statistics and Percentages (5)
    • 1: Discussion Problems
    • 1: Summary Worksheet

  • Chapter 2: Descriptive Statistics
    • 2.1: Averages
    • 2.2: Range, Standard Deviation and Variance (8)
    • 2.3: Measures of Relative Standing: z-scores (4)
    • 2.4: Measures of Relative Standing: Quartiles, Percentiles, and Box Plots (2)
    • 2.5: Weighted Averages & Simpson's Paradox (5)
    • 2: Discussion Problems
    • 2: Summary Worksheet
    • 2: Extra Problems (4)

  • Chapter 3: Statistical Tables and Graphics
    • 3.1: Frequency Distributions
    • 3.2: Histograms (13)
    • 3.3: Other Statistical Graphics (2)
    • 3: Summary Worksheet

  • Chapter 4: Introduction to Probability
    • 4.1: Basics (9)
    • 4.2: Conditional Probability (4)
    • 4.3: The Addition Rule (4)
    • 4.4: The Multiplication Rule (8)
    • 4.5: One Bad Apple - Probabilities of At Least One (4)
    • 4: Discussion Problems
    • 4: Summary Worksheet
    • 4: Extra Problems (1)

  • Chapter 5: Discrete Probability Distributions - Binomial Distributions
    • 5.1: Discrete Random Variables and Probability Distributions (6)
    • 5.2: Binomial Probability Distributions (14)
    • 5.3: Mean and Standard Deviation of a Binomial Distribution (4)
    • 5: Discussion Problems
    • 5: Summary Worksheet

  • Chapter 6: Continuous Probability Distributions: Normal Distributions
    • 6.1: Continuous Random Variables and The Standard Normal Distribution (7)
    • 6.2: Normal Distributions in General (7)
    • 6.3: Sampling Distributions
    • 6.4: The Central Limit Theorem (7)
    • 6.5: The Normal Approximation to the Binomial Distribution (4)
    • 6: Summary Worksheet
    • 6: Extra Problems (2)

  • Chapter 7: Confidence Intervals
    • 7.1: Introduction to Confidence Intervals
    • 7.2: Estimating a Population Mean and Sample Size (σ known) (5)
    • 7.3: Estimating a Population Proportion and Sample Size (7)
    • 7.4: Estimating a Population Mean (σ unknown) (4)
    • 7.5: A Summary and some loose ends (6)
    • 7: Discussion Problem 1 - Nate Silver - 2012 Election
    • 7: Discussion Problem 2 - Estimating a Population Size
    • 7: Summary Worksheet

  • Chapter 8: Hypothesis Testing - One Sample
    • 8.1: Foundations of Hypothesis Testing (7)
    • 8.2: Hypothesis Tests About a Proportion (6)
    • 8.3: Hypothesis Tests About a Mean: σ Not Known (8)
    • 8.4: Hypothesis Tests About a Mean: σ Known (Optional) (2)
    • 8: Summary Worksheet
    • 8: Extra Problems (1)

  • Chapter 9: Hypothesis Testing - Two Samples
    • 9.1: Hypothesis Tests for Mean Differences: Paired Data (4)
    • 9.2: Hypothesis Tests for Two Means: Independent Data (8)
    • 9.3: Hypothesis Tests for Two Proportions (6)
    • 9: Summary Worksheet (3)

  • Chapter 10: Correlation and Regression
    • 10.1: Correlation
    • 10.2: Linear Regression (19)
    • 10.3: The Hypothesis Test Behind the Scenes
    • 10.4: Multiple Linear Regression: Controlling for Variables - An Introduction
    • 10: Summary Worksheet (3)

  • Chapter 11: Additional Hypothesis Tests
    • 11.1: Chi-Squared Test for Goodness of Fit
    • 11.2: Chi-Squared Test of Independence
    • 11.3: ANOVA - An Introduction
    • 11: Summary Worksheet

Stevens' Introduction to Statistics: Think & Do textbook is presented in an innovative workbook format, integrating theoretical content with demonstrative examples and exercises in a page-by-page bullet point format. Designed to mimic the style of a typical classroom lecture, new content is initially summarized at the top of the page, followed by a completed demonstrative example before an unfinished example for the student to complete. While students often have difficulty connecting what is learned in a lecture to the corresponding content of a traditional textbook, Stevens' book bridges this gap by combining lecture notes, examples, exercises, and textbook content into a single, well-organized workbook. The digital version contains video solutions to selected exercises.

Questions Available within WebAssign

Most questions from this textbook are available in WebAssign. The online questions are identical to the textbook questions except for minor wording changes necessary for Web use. Whenever possible, variables, numbers, or words have been randomized so that each student receives a unique version of the question. This list is updated nightly.

Question Group Key
P - Problem Set
SW - Summary Worksheet
XP - Extra Problem (not found in textbook)


Question Availability Color Key
BLACK questions are available now
GRAY questions are under development


Group Quantity Questions
Chapter 1: Introduction
1.P 27 003a 003b 003c 004ab 004cd 005ac 006ace.v1 006ace.v2 006ae 006bd 006bdf.v1 006bdf.v2 008a 008b 008c 008d 009a 009b 009c 009d 009e 009f 011 012 013 014 015
Chapter 2: Descriptive Statistics
2.P 23 001-002.v1 001-002.v2 003-004.v1 003-004.v2 005 006 007 008 009 010 011 012 017.v1 017.v2 018 019 020 021 022 501.XP 502.XP 503.XP 504.XP
Chapter 3: Statistical Tables and Graphics
3.P 15 001c 001d 001e 002c 002d 002e 005 006 007 008 009a.v1 009a.v2 009b 011 014
Chapter 4: Introduction to Probability
4.P 30 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018ab 018c 018def 019 020 021 022 023 024 025 026 027 501.XP
Chapter 5: Discrete Probability Distributions - Binomial Distributions
5.P 24 001 002 003 004 005 006 007 008 009a 009b 009c 009d 010a 010b 010c 010d 011 012 013 014 015 016 017 018
Chapter 6: Continuous Probability Distributions: Normal Distributions
6.P 27 001 002a 002b 002c 003 004a 004b 005abc 005def 006abc 006def 007a 007b 008 009ab 009c 009d 010ab 010c 010d 012 013 014 015 016 501.XP 502.XP
Chapter 7: Confidence Intervals
7.P 22 001abc 001def 002abc 002def 003-004 005abc 005de 006abcf 006de 007abcde 007fg 008 009 010 011 012 013-014.v1 013-014.v2 015 016 017 018
Chapter 8: Hypothesis Testing - One Sample
8.P 24 001 002 003-004 005-006 007-008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025a 026 501.XP
Chapter 9: Hypothesis Testing - Two Samples
9.P 18 001 002 003 004 005a 005b 006 007 008a 008b 009 010 011 012 013 014 015 016
9.SW 3 001 002 003
Chapter 10: Correlation and Regression
10.P 19 001a 001b 002abc 002e 002f 003ab 003beh 003c 003d 005a 005b 005c 008bcd 008eg 008f 009.v1 009.v2 010 011
10.SW 3 001-003 005 006
Chapter 11: Additional Hypothesis Tests
11.P 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020
Total 235 (20)