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# Mahatma Gandhi University (MGU) 2007 B.C.A Computer Application First Semester PROBABILITY &STATISTICS - Question Paper

Friday, 17 May 2013 08:50Web

BCA Ist Sem PROBABILITY &STATISTICS 2007 (Page 2)

19. obtain rank, Correlation Coefficient
X : 22 25 18 25 26 22
Y :28 29 25 28 29 30
OR
20. obtain regression lines
X: one three five seven 9
Y: two four six eight 10
21. discuss various components of time series
OR
22. obtain pattern line formula & pattern values
Year: 1990 91 92 93 94 95
Values: 50 52 48 55 57 60

First Semester BC'A Degree Examinations

BCA 103 PROBABILITY &STATISTICS

Time: 3 hrs    Marks: 75

PART A

(Answer any Ten questions. Each question carries 3 marks))

1.    What is primary data?

2.    Define Simple Random Sampling.

3.    Define Pie-Diagram.

4.    What is Coefficient of variation.

5.    Define random experiment.

6.    What is conditional Probability.

7.    Define correlation.

S. What is regression Coefficient.

9.    What is trend.

10.    Define seasonal variation.

11.    Define Median

12.    What is Histogram

PART B

(Answer all questions, Each question carries 9 marks)

13.    Explain different methods of sampling

OR

14.    What are tlie different methods of collecting data?

15.    Draw ogive for the following data

Class: " 0-10 10-20 20-30 30-40 40-50 Frequency: 5 7 13 8 3 OR

16.    Find Mean. Median and Mode

Class:    0-9 10-19 20-29 30-39

Frequency: 5 10 15 5

17.    State & Prove Bayes theorem

OR

18.    A problem in statistics is given to 3 students Their chances of solving this problem are 173.2/3. 1/3 respectively what is the probability that the problem will be solved.

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