Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) BT-Bio Technology 2020 December 4th Sem 55084 Biostatistics Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (BT) (2012 to 2017) (Sem.?4)
BIOSTATISTICS
Subject Code : BTBT-401
M.Code : 55084
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write briefly :
1.
Histogram and scatter diagram
2.
Mann-Whitney test
3.
Skewness and Kurtosis
4.
Decile and percentile
5.
Type I and Type II error
6.
Normal curve
7.
Spearman rank Correlation
8.
Frequency distribution
9.
Standard deviation and standard error
10. Poisson distribution
SECTION-B
11. What is binomial distribution? What are the chances of getting any combination, i.e., 2
boys, 1 girl or 1 boy, 2 girls or three boys or three girls when the number of pregnancies is
3? Probability of getting a boy or a girl is found to be 0.5
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12. The following are the number of babies born during a year in 40 community hospitals.
From these data construct a frequency distribution, cumulative frequency, relative
frequency and draw a histogram for the constructed table.
50 51 21 57 27 61 70 49 58 30 28 41 42 44 29
25 43 20 23 33 45 25 30 67 50 55 45 29 32 51
67 73 55 52 37 30 42 68 55 36
13. What is hypothesis testing? Briefly describe the importance of statistical hypotheses.
14. Briefly describe the differences between correlation and regression.
15. The body surface area of 15 children are : 196, 185, 114, 101, 217, 135, 184, 122, 233, 227,
336, 198, 253, 148 and 109. Calculate variation, standard deviation, standard error and
coefficient of variation for this data
SECTION-C
16. Find out the regression equation of Y on X for the heights of sons and fathers for the data
given below.
Fathers (X)
65, 63, 67, 64, 68, 62, 70, 66, 68, 67, 69, 71
Sons (Y)
68, 66, 68, 65, 69, 66, 68, 65, 71, 67, 68, 70
17. Students were given different drug treatments before revising for their exams. Some were
given a memory drug, some a placebo drug and some no treatment. The exam scores (%)
are shown below for the three different groups : Carry out a one-way ANOVA to test the
hypothesis that the treatments will have different effects.
Memory Drug Placebo
No treatment
70
37
3
77
43
10
83
50
17
90
57
23
97
63
30
18. Is there any association of age and death in patients who were treated for tuberculosis?
Details of treatment of patients are given below (use 2 test).
No. of patients under treatment
Age
Dead
Recovered
Total
Young
4
25
29
Older
23
44
67
Total
27
69
96
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student..
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This post was last modified on 13 February 2021