Biostatistics — Flashcards

Flashcard 71: youden's index gives _____

Answer: utility of a test 

Extra: 

Flashcard 72: Correlation coefficient used to measure **linear** relationships: _____

Answer: Pearson correlation

Flashcard 73: What is the equation for Positive Predictive Value (PPV)?\n_____

Answer: PPV = TP / (TP + FP)

Flashcard 74: dependency ratio in india is _____

Answer: 50.2%

Extra: 

Flashcard 75: national family health survey is used for _____ indicators

Answer: health and morbidity

Extra: 

Flashcard 76: p value ranges from  _____

Answer: 0 to 1

Extra: 

Flashcard 77: False positive error rate is related to _____ error

Answer: Type I

Flashcard 78: Mean formula for **grouped data**:\n(\(f\) = frequency, \(X\) = value, \(n\) = total frequency)\n\n_____

Answer: \(\frac{\sum fX}{n}\)

Flashcard 79: _____ is the last affected measure by extreme values

Answer: mode

Extra: 

Flashcard 80: Coefficient of determination formula

Answer: r² (where r is the correlation coefficient)

Extra: The coefficient of determination (r²) represents the proportion of the variance for a dependent variable that's explained by an independent variable in a regression model.