FirstRanker Logo

FirstRanker.com - FirstRanker's Choice is a hub of Question Papers & Study Materials for B-Tech, B.E, M-Tech, MCA, M.Sc, MBBS, BDS, MBA, B.Sc, Degree, B.Sc Nursing, B-Pharmacy, D-Pharmacy, MD, Medical, Dental, Engineering students. All services of FirstRanker.com are FREE
📱

Get the MBBS Question Bank Android App

Access previous years' papers, solved question papers, notes, and more on the go!

Install From Play Store

Download GTU BE/B.Tech 2018 Winter 8th Sem New 2180403 Biostatistics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2180403 Biostatistics Previous Question Paper

This post was last modified on 20 February 2020

Tags:GTUBEB.Tech2018Winter8th SemesterNew2180403BiostatisticsQuestion PaperPDFGujarat Technological University
Download Document
Download Document
Nursing Question Bank - Post Basic B.Sc Nursing Last 10 Years 2012-2025 Question Papers (1st and 2nd Year)


GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER–VIII (NEW) EXAMINATION – WINTER 2018
Subject Code: 2180403

--- Content provided by FirstRanker.com ---

Subject Name: Biostatistics
Date: 29/11/2018
Time: 02:30 PM TO 05:00 PM
Total Marks: 70

Instructions:

--- Content provided by​ FirstRanker.com ---

  1. Attempt all questions.
  2. Make suitable assumptions wherever necessary.
  3. Figures to the right indicate full marks
  4. All the necessary charts are pasted with this question paper.
  5. Notations used in this paper, carry conventional meaning.

    6. --- Content provided by‍ FirstRanker.com ---

MARKS
Q.1 (a) Differentiate between histogram, pie chart, bar chart and map diagram.
(b) Distinguish between Mean, Median and Mode.
(c) The viable cell count for the Acetobacter (N) in a culture after t hours, is given by the following table :
t 0 1 2 3 4 5 6
N 30 45 65 90 130 190 270
Fit a curve of the form N= abt and estimate N when t = 5.5 . 		03
04

--- Content provided by⁠ FirstRanker.com ---

07
Q.2 (a) Define : 1. Quartiles 2. Deciles 3. Quintiles.
(b) The frequency distribution of weight in grams of mangoes of a given variety is given below. Calculate the arithmetic mean and the median.
Weight in grams Number of mangoes
410-419 14
420-429 20
430-439 42
440-449 54
450-459 45
460-469 18
470-479 7

(c) At an international student organization the president of organization expected that the students present should be 10 percent Africans, 25 percent Indians, 40 percent Asians and 25 percent Americans. The students actually present consisted of 25 Africans, 15 Indians, 80 Asians and 20 Americans. Test the president's belief at 5 percent level.
OR

--- Content provided by FirstRanker.com ---

(c) Find the coefficient of correlation between the variables X and Y using Karl Pearson's method:
X 1 3 4 6 8 9 11 14
Y 1 2 4 4 5 7 8 9
03
04
07

--- Content provided by‌ FirstRanker.com ---

07
(a) Differentiate essential biostatistics.
(b) Calculate the mean from the following data:
Fish Length In cms 90-99 80-89 70-79 60-69 50-59 40-49 30-39
Frequency 2 12 22 20 14 4 1

(c) Two samples A and B have means 2.158 and 1.96 respectively. Determine whether there is significant difference in means of sample A and sample B.
Sample A 2.5 2.1 1.9 2.4 1.8 2.6 2.5 2.3 0.9 1.7 2.2 2.0
Sample B 1.8 1.7 1.9 2.2 2.3 2.0 1.9 1.8 2.1 1.9 - -
03

--- Content provided by​ FirstRanker.com ---

04

07
Q.3 (a) Write a note on: Importance of Biostatistics
(b) The following table gives the age distribution of a group of 50 individuals. Calculate the coefficient of range in this group.
Age (in years) X 16-20 21-25 26-30 31-35
No of persons f 10 15 17 8

--- Content provided by‍ FirstRanker.com ---

(c) Body length of 10 fishes of a species of fish population was recorded from two ponds in the following table:
Pond Body length of fishes in cm
A 20 24 25 28 22 20 24 32 34 26
B 12 10 8 10 6 4 14 20 10 6
Calculate the mean difference in total body length between the fishes in the above two ponds is significant or not. 		03
04

07
Q.4 (a) Write a note on methods of least square.

--- Content provided by‌ FirstRanker.com ---

(b) Explain the type-I and type- II errors.
(c) In a clinical treatment, the patients were tested to see the effect of a potential hypertensive drug. The 50 patients were assigned to receive drug and other 50 as placebo at random. Their response to treatment was categorized as favorable or unfavorable. The data is given in the table below:
Treatment Response Total
Un favorable Favorable
Placebo 41 9 50
Drug 16 34 50
57 34 100
03
04
07
Q.4 (a) What is probable error?

--- Content provided by​ FirstRanker.com ---

(b) Find the coefficient of rank correlation from the data given below showing the ranks of 10 students according to their performance in Microbiology and Statistics.
Rank in Microbiology 8 3 9 5 7 10 4 6 1 5
Rank in Statistics 9 5 10 1 8 7 3 4 2 6

(c) In a sample survey of public opinion, two questions were asked: they were : (1) do you drink? (2) are you in favour of local opinion of sale of liquor? The answers of the survey is given in the local table. Is local opinion on the sale of liquor is dependent on the individual habit of drinking?
Yes No Row Total
Yes 56 31 87
No 18 6 24
Column Total 74 37 111
03
04

--- Content provided by​ FirstRanker.com ---


07
Q.5 A company appoints 4 salesmen observe the sales in 3 seasons. Carry put ANOVA to check the difference in sales due to salesman and seasons. The details are given below.
Seasons SALESMEN
A B C D
Summer 36 36 21 35
Winter 28 29 31 32
Monsoon 26 28 29 24
14
Q.5 The following data represent the numbers of unit of production per day turned out by 4 different workers using 5 different types of machines:
Worker A B C D E
1 4 5 3 6 7
2 8 6 5 4
3 7 6 7 8 8
4 3 5 4 8 2

On the basis of this information, can it be concluded that

--- Content provided by‍ FirstRanker.com ---

(i) The productivity is the same for different machines?
(ii) The workers do not differ with regard to productivity? 		14

www.FirstRanker.com



--- Content provided by​ FirstRanker.com ---

This download link is referred from the post: Nursing Question Bank - Post Basic B.Sc Nursing Last 10 Years 2012-2025 Question Papers (1st and 2nd Year)

This post was last modified on 20 February 2020