Though the northernmost islands experience a bit of rain, September is largely dry, warm and sunny throughout the islands. High season in Hawaii doesn't start till mid-December, so September is still off-season for the Hawaii tourism industry and deals abound.
T-tests and analysis of variance (ANOVA) are widely used statistical methods to compare group means. For example, the independent sample t-test enables you to compare annual personal income between rural and urban areas and examine the difference in the grade point average (GPA) between male and female students.
Human-computer interaction research often involves experiments with human participants to test one or more hypotheses. One of the most common statistical tools for hypothesis testing is the analysis of variance (ANOVA). The ANOVA result is reported as an F-statistic and its associated degrees of freedom and p-value. This research note does not explain the analysis of variance, or even the F-statistic itself.