Free Biostatistics practice for NEET PG and INI-CET Community Medicine, with a written explanation on every question.
8 questions · Free explanations
Showing 1–8 of 8 questions
Q1 · Sensitivity
NEET PGMediumExplanation
Sensitivity is the proportion of truly diseased people the test correctly identifies, TP divided by TP plus FN. A highly sensitive test is good for ruling out disease when negative.
Q2 · Specificity
NEET PGMediumExplanation
A highly specific test gives few false positives, so a positive result reliably rules in disease. Highly sensitive tests are preferred for screening because a negative reliably rules out disease.
Q3 · Predictive Value
NEET PGHardExplanation
Positive predictive value depends on prevalence: as prevalence falls, more of the positives are false positives, so PPV decreases. Sensitivity and specificity are intrinsic to the test and do not change with prevalence.
Q4 · Types of Data
EasyExplanation
Blood group is nominal, or categorical, data with categories that have no inherent order. Ordinal data have a rank order such as disease stage, while interval and ratio data are numerical.
Q5 · Central Tendency
MediumExplanation
The median is preferred for skewed data because it is not distorted by extreme values, unlike the mean. For normally distributed data, mean, median and mode coincide.
Q6 · Normal Distribution
MediumExplanation
In a normal distribution about 68% of values lie within one standard deviation, about 95% within two and about 99.7% within three, the empirical rule.
Q7 · Hypothesis Testing
HardExplanation
A Type I error is a false positive: rejecting a true null hypothesis. A Type II error is a false negative: failing to reject a false null hypothesis. Power equals 1 minus beta.
Q8 · Statistical Tests
HardExplanation
The unpaired Student's t-test compares means between two independent groups for normally distributed continuous data. The chi-square test compares categorical data, and ANOVA compares means across three or more groups.
Biostatistics sits within Community Medicine, which carries the same syllabus in both exams. This set runs to 8 questions, each tagged Easy, Medium or Hard, 3 of them at Hard, and 3 drawn from previous-year papers.
Answer first, then read the explanation even on the ones you got right — the reasoning is where Biostatistics marks are actually won, and it is what separates a recalled fact from a question you can solve in a new form. Once the Easy set feels comfortable, filter to Hard to find the gaps Community Medicine examiners keep returning to.
FAQ
Yes. Every question and explanation in this Biostatistics set is free and open — no login, no form and no payment. The explanation appears the moment you answer.
Biostatistics sits within Community Medicine, which appears in the same form in both syllabuses. Biostatistics, epidemiology and the national health programmes. Numbers-heavy, and among the most predictable scoring areas in the paper.
No. No account, no password, no OTP. Answer in the browser and your answers stay on your device for the session.