OCTOBER 2018 Sub. Code: 1902
M.Sc. IN PUBLIC HEALTH EXAMS
FIRST YEAR
PAPER II PRINCIPLES OF BIO-STATISTICS
Q.P. Code 281902
Time: Three hours Maximum 100 Marks
I. Elaborate on: x 20 40)
1. What is Diagnostic Test? Explain about: Sensitivity, Specificity, Positive and
Negative Predictive Values with suitable example.
2. Determine the following:
Regression equation of Y on X for the given data.
x 1 3 6 3 2 1
y 2 4 4 2 6 3
Calculate the Pearson r for the following data:
20, 18, 19, 17, 18
II. Write notes on: (10 x 6 60)
1. Explain the following terms:
Mean, Median, Mode with suitable example.
2. Explain graphical representation of data and How do you graphically portray for
quantitative and qualitative data.
3. Define the following with symbol
Two tailed, Left tailed, Right tailed test.
4. Define probability distribution and write short note about the following
distributions:
Binomial Distribution, Normal Distribution, Poisson distribution.
5. Define Reliability, Validity and Accuracy.
6. Explain the necessity for questionnaire constructions and list out steps to Design a
Questionnaire.
7. Explain the following:
Inferential statistics Estimation Hypothesis
8. Explain the logic behind a Kruskal-Wallis test and how it differs from ANOVA?
9. Explain linear regression and brief about the assumptions of regression.
10. Define Censoring and discuss different types of censoring.