MBA - MB0040 Assignment Feb 2012

MBA - MB0040 1st Semester Assignment, Spring / Feb 2012

MB0040 – Statistics for Management

Assignment Set- 1 

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                    5
        10-20                  10
        20-30                  15
        30-40                  8
        40-50                  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                     3
        80-82                     15
        82-84                     26
        84-86                     23
        86-88                     9
        88-90                     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

 

 

Assignment Set- 2

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