Sampling Methods — Flashcards

Flashcard 1: Statistical power of a test is calculated as _____

Answer: 1-(Type II error)

Flashcard 2: Method for comparison of a new test with an available gold standard test (for quantitative data) is the _____ method

Answer: Bland-Altman plot

Extra: The **Bland-Altman plot** is used to assess the **agreement** between two methods of measurement. Correlation (e.g., Pearson's r) measures the strength of a linear relationship, but not agreement (two methods can be perfectly correlated but give consistently different results).

Flashcard 3: Interval and ratio scale data represent _____ type of data scales

Answer: quantitative (qualitative/quantitative)

Flashcard 4: _____ numbers of observations are a frequent source of bimodality, which makes their interpretation difficult.

Answer: Small (Large/Small)

Flashcard 5: _____ is decreased by systematic error in a test

Answer: Accuracy

Flashcard 6: Which indicator is most useful for evaluating the effectiveness of a health program?

Answer: Incidence

Extra: Incidence (the rate of new cases) is the most sensitive indicator for evaluating the effectiveness of health programs, particularly those aimed at prevention and control. \n\nNote: For evaluating the impact of a treatment program for chronic diseases, prevalence might be used, but incidence remains the gold standard for program effectiveness.

Flashcard 7: What type of distribution is this? _____

Answer: Normal

Flashcard 8: What type of distribution is this? _____

Answer: Negative/Left

Flashcard 9: What type of distribution is this? _____

Answer: Positive/Right

Flashcard 10: What type of bar graph is represented below? _____

Answer: Compound bar graph