Resource Library

Statistical Topic

Data Collection 587
Data Presentation 450
Probability 816
Statistics Education 85
Statistical Inference & Techniques 1204
Advanced Search | Displaying 431 - 440 of 591

  • Weapons and Aggression

    This case study addresses the question: "Does the mere presence of a weapon increase the accessibility of aggressive thoughts?" It concerns the following concepts: quantile and box plots, stem and leaf displays, one-sample t test, confidence interval, within-subjects ANOVA, and consequences of violation of normality assumption.

    View Resource

    0
    No votes yet

  • Magnets and Pain Relief

    This case study assesses the question, "Can the application of magnetic fields be an effective treatment for pain?" It addresses concepts including: boxplots, stem and leaf displays, correlated t-test, two-sample t-test, repeated measures analysis of variance, and analysis of covariance.

    View Resource

    0
    No votes yet

  • Smiles and Leniency

    This case study addresses the question: "Will a smiling person accused of a crime be treated more leniently than one who is not smiling? If so, does the type of smile make a difference?" It concerns the following concepts: quantile/boxplots, contrasts among means, Dunnett's test, and Bonferroni correction.

    View Resource

    0
    No votes yet

  • Instructor Reputation and Teacher Ratings

    This case study covers the concepts including: boxplots, stem and leaf displays, two-sample t tests, and analysis of variance. It also assesses the question, "Does an instructor's reputation affect ratings of the instructor's lecture?"

    View Resource

    0
    No votes yet

  • Diet and Health

    This case study compares a low-fat diet to a "Mediterranean diet" to see which led to better health. Concept: Chi Square test of independence

    View Resource

    0
    No votes yet

  • Physical Strength and Job Performance

    This case study aims to answer the question, "How does one select employees to perform physically demanding jobs?" It examines the relationship between isometric strength tests and job performance for 147 workers. Concepts: correlation, linear regression, multiple regression.

    View Resource

    0
    No votes yet

  • Who is Buying iMacs?

    This case study covers the following concepts: confidence intervals for proportions and the normal approximation to the binomial. It also assesses the question: "What proportion of the iMac purchasers are new computer owners?"

    View Resource

    0
    No votes yet

  • Natural Language Interface

    This case study assesses the question, "Is it easier to learn to use computer software that uses natural language commands?" Concepts: analysis of covariance, adjusted means, boxplots

    View Resource

    0
    No votes yet

  • Physicians' Reactions to Overweight Patients

    This case study assesses the question, "Do physicians discriminate against overweight patients?" This study indicates that, at least in one respect, they do. Concepts: t-test, means, boxplots

    View Resource

    0
    No votes yet

  • Data Summary Project

    The goal of this assignment is to obtain summary statistics for the variables in the data set, ncbirth1450.xls, which represents a random sample of 1450 births from the state of North Carolina.

    View Resource

    0
    No votes yet

Pages