VNSGU BPT 2019 2nd Year 4001 Biostatistics Question Paper

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RAN-4001

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S.Y. BPT Examination
March / April - 2019
Biostatistics

Instructions: Fill up strictly the details on your answer book

Name of the Examination: S.Y. BPT Biostatistics

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Q-1 What is measure of variation? Explain different measures of variation with example. (10)

OR

Q-1 Calculate mean, median and mode from the following data.

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Q-2 Attempt any three of the following (5*3=15)

1. Identify more consistent series using co-efficient of variation from the following data:
   Series-1: 3, 5, 2, 0, 2, 4, 5
   Series-2: 4, 1, 3, 5, 4, 2, 2
2. Calculate Pearson's correlation co efficient between following two variables and interpret its value:
   

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   X	8	7	1	5	1	6	1	9	7
   Y	5	9	8	6	4	2

3. Explain what is simple and multiple regression, linear and non linear regression. From the following information obtain regression line of Y on X.
   

   	Mean	Standard deviation
   X	11.9	2.3
   Y	12.8	3.5

   Correlation coefficient: 0.77
   Also estimate value of Y when x=25.
4. To examine the effectiveness of diet programme, data are collected before and after diet programme on 10 individuals and following information obtained:
   

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   a. State null and alternative hypothesis if researcher wants to know if there is a difference
   b. Sample information obtained are d =9, s =23
   c. If t₉ =2.262, report your decision

Q-3 Short answer type (5 out of 6) (3*5=15)

1. Histogram

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2. Ordinal scale of measurement
3. Linear and non linear correlation
4. Analysis of variance (ANOVA)
5. One sample t-test
6. Stratified sampling

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