Biostatistics — Flashcards

Flashcard 101: Formula for Median for grouped data, where Median group is where _____ lies \(L = \)_____ \(f_1 = \) _____ \(f_0 = \) _____ \(C_{f_0} = \) _____ \(i = group \ interval\) is given by _____

Answer: \(\frac {n}{2}^{th}\) observation

Extra: y

Flashcard 102: c65872b736324b578b20a22eef5c027a-ao-4

Answer: tests of significance

Extra: 

Flashcard 103: In any sampling distribution, → _____includes 68% of the observations → _____ includes 95% of the observations (95% confidence interval) →_____ includes 99% of the observations (99% confidence interval)

Answer: \(Mean \pm1SE \) 

Extra: y

Flashcard 104: type I error[alpha] means _____

Answer: when a true null hypothesis is rejected

Extra: 

Flashcard 105: _____ was first to publish a study in field of demography

Answer: John graunt

Extra: 

Flashcard 106: standard deviation formula is

Answer: root mean squared deviation take whole root n-1 if <30

Extra: 

Flashcard 107: World Population Day is on _____

Answer: 11th July

Flashcard 108: there is registration of _____ in civil registration system(CRS)

Answer: death and birth

Extra: 

Flashcard 109: Type II error (β) occurs when a _____

Answer: false null hypothesis is accepted

Extra: Type I error (α): Rejecting a true null hypothesis (False Positive). Type II error (β): Failing to reject/accepting a false null hypothesis (False Negative).

Flashcard 110: A _____ is a type of graph used to compare two or more sets of qualitative data side-by-side.

Answer: multiple bar chart