Smiles and Leniency
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?
Concepts: quantile/boxplots, contrasts among means, Dunnet's test, Bonferroni
correction
Weapons and
Aggression
Does the mere presence of a weapon increase the accessibility of aggressive
thoughts?
Concepts: quantile and box plots, stem and leaf displays, one-sample
t test, confidence interval, within-subjects ANOVA, consequences of violation
of normality assumption
Magnets
and Pain Relief
Can the application of magnetic fields be an effective treatment for pain?
Concepts: boxplots, stem and leaf displays, correlated t test, two-sample
t test, repeated measuresanalysis of variance, analysis of covariance
Instructor
Reputation and Teacher Ratings
Does an instructor's reputation affect ratings of the instructor's
lecture?
Concepts: boxplots, stem and leaf displays, two-sample t tests, analysis
of variance
Diet and
Health
A low-fat diet was compared to a "Mediterranean diet."
See which led to to better health.
Concepts: Chi Square test of independence
Physical
Strength and Job Performance
How does one select employees to perform physically demanding
jobs? This case study examines the relationship between isometric strength tests
and job performance for 147 workers.
Concepts: correlation, linear regression,
multiple regression
Who is Buying iMacs?
What proportion of the iMac purchasers are new computer owners?
Concepts:
confidence intervals, proportion, normal approximation to binomial