Biostatistics — Flashcards

Flashcard 11: non-parametric test of significance is done for _____ and _____ data

Answer: qualitative

Extra: 

Flashcard 12: harmonic mean is calculated in cases of _____

Answer: inverse data and fractional values

Extra: 

Flashcard 13: standard error proportions is calculated for _____ data

Answer: qualitative

Extra: 

Flashcard 14: Formula for Mode for Grouped data, when, \(L = \) lower limit of modal class \(f_1 = \) _____ \(f_0 = frequency \ of \ class \ above\ modal\ class\) \(f_2 = frequency\ of \ class \ after \ modal \ class\) \(i = group \ interval\) is given by, _____

Answer: frequency of modal class

Flashcard 15: c65872b736324b578b20a22eef5c027a-ao-5

Answer: tests of significance

Extra: 

Flashcard 16: Most commonly used sampling method in health surveys is _____

Answer: cluster sampling

Flashcard 17: IDD(iodine def. disorder) survey is done using _____ sampling method

Answer: cluster

Extra: 

Flashcard 18: cut off for z score is _____

Answer: 2 SD(standard deviate)

Extra: 

Flashcard 19: Formula to calculate **Standard Deviation** in **Ungrouped data**:\n\nWhen:\n\\(\\bar{X}\\) = Mean\n\\(X - \\bar{X}\\) = Difference of each observation from mean\n\\(\\sum (X - \\bar{X})^2\\) = Sum of squares of mean deviations\n\nStandard formula:\n_____\)}} \n\nShortcut formula:\n_____{n-1}}\)}}

Answer: \(SD = \sqrt{\frac{\sum (X - \bar{X})^2}{n-1

Flashcard 20: 3675d56a2e7b4499a8f95928687a3c92-ao-1

Answer: sensitivity,specificity,PPV,NPV relations-MCQ AIIMS 18

Extra: ? P for P goes down