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**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

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__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

Y 22 14 4 12 8

Hi where i can get the ansers of all these questions?

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