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 0-10 10-20 20-30 30-40 40-50 No. of people 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 78-80 80-82 82-84 84-86 86-88 88-90 No. of students 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 1st Week 2nd Week 3rd Week Total I 15 5 20 40 II 20 10 20 50 III 25 15 20 60 Total 60 30 60 150 Q6. Find Karl Pearson’s correlation co-efficient for the data given in the below table: X 20 16 12 8 4 Y 22 14 4 12 8

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