Master of Business Administration- MBA Semester 1 MB0040 – Statistics for Management - 4 Credits (Book ID: B1129) Assignment Set - 1 (60 Marks)
Note: Each question carries 10 Marks. Answer all the questions.
Q1. What are the functions of Statistics? Distinguish between Primary data and Secondary data. Q2. Draw a histogram for the following distribution: Age No. of people 0-10 10-20 20-30 30-40 40-50
5
10
15
8
2
Q3. Find the median value of the following set of values: 45, 32, 31, 46, 40, 28, 27, 37, 36, 41. Q4. Calculate the standard deviation of the following data: Marks No. of students 78-80 80-82 82-84 84-86 86-88 88-90
3
15
26
23
9
4
Q5. An unbiased coin is tossed six times. What is the probability that the tosses will result in: (i) exactly two heads and (ii) at least five heads. Q6. Explain briefly the types of sampling
Spring 2012
Master of Business Administration- MBA Semester 1 MB0040 – Statistics for Management - 4 Credits (Book ID: B1129) Assignment Set - 2 (60 Marks)
Note: Each question carries 10 Marks. Answer all the questions.
Q1. Explain the following terms with respect to Statistics: (i) Sample, (ii) Variable, (iii) Population. Q2. What are the types of classification of data? Q3. Find the (i) arithmetic mean and (ii) range of the following data: 15, 17, 22, 21, 19, 26, 20. Q4. Suppose two houses in a thousand catch fire in a year and there are 2000 houses in a village. What is the probability that: (i) none of the houses catch fire and (ii) At least one house catch fire? Q5. (i) What are the characteristics of Chi-square test? (ii) The data given in the below table shows the production in three shifts and the number of defective goods that turned out in three weeks. Test at 5% level of significance whether the weeks and shifts are independent. Shift I II III Total 1st Week 15 20 25 60 2nd Week 5 10 15 30 3rd Week 20 20 20 60 Total 40 50 60 150
Q6. Find Karl Pearson’s correlation co-efficient for the data given in the below table: X Y 20 22 16 14 12 4 8 12 4 8
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