JNTU
JNTU B.Pharmacy IV BIOSTATISTICS AND RESEARCH METHODOLOGY Previous Question Paper (June - 2024 - R17)
i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Define the terms statistics and biostatistics.
Answer
Statistics is the science of collecting, organizing, analyzing, interpreting, and presenting numerical data. Biostatistics is the application of statistical methods and techniques to biological, medical, and public health data to draw inferences about populations.
Write a note on measures of dispersion.
Answer
Measures of dispersion describe the spread or variability of data around a central value. Key measures include:
- Range: The difference between the maximum and minimum values.
- Variance: The average of the squared differences from the mean.
- Standard Deviation: The square root of the variance, representing the typical deviation from the mean.
- Coefficient of Variation: A relative measure of dispersion used to compare variability between different datasets.
What are the uses and restrictions of regression equations?
Answer
Sign in to view the complete answer paper.
Write a brief note on type I and type II errors.
Answer
Sign in to view the complete answer paper.
What is Friedman test?
Answer
Sign in to view the complete answer paper.
Write a note on experimental design technique.
Answer
Sign in to view the complete answer paper.
For what purposes R-software used?
Answer
Sign in to view the complete answer paper.
Write the significance of MS Excel in statistical analysis.
Answer
Sign in to view the complete answer paper.
Define the terms levels and factors in optimization.
Answer
Sign in to view the complete answer paper.
Write short notes on factorial design.
Answer
Sign in to view the complete answer paper.
Part B
Calculate the mean, median, mode, range, standard deviation and coefficient of variation for the following 11 observations. 67, 66, 71, 33, 63, 72, 74, 58, 78, 75, 67.
Answer
Sign in to view the complete answer paper.
Explain the types of correlation and methods of studying correlations.
Answer
Sign in to view the complete answer paper.
The following table shows the grouped data, in classes for the heights of 50 people. Calculate Mean and Standard deviation. Heights (in cm) 120-130 130-140 140-150 150-160 160-170 Frequency 2 5 25 10 8
Answer
Sign in to view the complete answer paper.
If the simple correlation coefficient has the values r12=0.6, r13=0.65, r23=0.8. Find the multiple correlation coefficients of R1.23 and R2.13.
Answer
Sign in to view the complete answer paper.
What is hypothesis? What are different types of hypothesis and explain with a suitable example.
Answer
Sign in to view the complete answer paper.
Calculate the regression equation between x and y based on the data given below.
Answer
Sign in to view the complete answer paper.
Classify the types of t-test. Explain the methodology of unpaired t-test with a suitable example.
Answer
Sign in to view the complete answer paper.
Explain the procedure involved in two-way ANOVA with formulas.
Answer
Sign in to view the complete answer paper.
Write a note on Wilcoxon Rank Sum Test and Mann-Whitney U test.
Answer
Sign in to view the complete answer paper.
Explain in detail about cross-over and parallel clinical study design.
Answer
Sign in to view the complete answer paper.
Explain in brief cohort, observational and experimental studies with suitable examples.
Answer
Sign in to view the complete answer paper.
Write a note on: i) Histogram, ii) Pie Chart, iii) Cubic Graph.
Answer
Sign in to view the complete answer paper.
Explain in briefly SPSS and R - Online Statistical Software.
Answer
Sign in to view the complete answer paper.
Discuss the importance of design of experiments in statistical analysis.
Answer
Sign in to view the complete answer paper.
Explain the optimization techniques of Simplex and Lagrangain methods with suitable examples.
Answer
Sign in to view the complete answer paper.
Response Surface design
Answer
Sign in to view the complete answer paper.
Fractional Factorial design
Answer
Sign in to view the complete answer paper.