Download JNTU-Hyderabad MBA 1st Sem R17 2020 Jan 741AD Business Statistics Question Paper

FirstRanker.com

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MBA I Semester Examinations, January - 2020

--- Content provided by FirstRanker.com ---

BUSINESS STATISTICS

Time: 3hours Max.Marks:75

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

PART - A

--- Content provided by FirstRanker.com ---

5 × 5 Marks = 25

1. a) State the functions of Statistics.
2. b) Explain briefly ‘Kurtosis'.
3. c) Explain different types of graphs.
4. d) Explain the properties of regression coefficients.

--- Content provided by FirstRanker.com ---

5. e) Explain any one model of time series analysis.

PART - B

5 × 10 Marks = 50

1. Calculate Mean, Median and Mode for the following distribution:
   

   Monthly wages (Rs.)	No. of workers
   Less than 2,000	78
   2,000-4,000	42
   4,000-6,000
   6,000 - 8,000
   8,000 – 10,000	12

   [10]
   

   --- Content provided by FirstRanker.com ---

   OR
2. Find the Geometric Mean for the data given below:
   

   Marks
   4-8	6
   8-12	10
   12-16	18
   16-20	30
   20-24	15
   24-28	12
   28-32	10
   32-36	6
   36-40	2

   [10]
3. Calculate the quartile deviation and its coefficient of quartile deviation from the following data:
   

   Wages in Rupees per week	No. of wage earners
   <100	14
   100-105	62
   105-110	99
   110-115	18
   over 105	7

   [10]
   

   --- Content provided by FirstRanker.com ---

   OR
4. Calculate Karl Pearson's coefficient skewness from the following data:
   

   Profit (Rs. lakhs)	No. of Cos.
   70-80	12
   80-90	18
   90-100	35
   100-110	42
   110-120	50
   120-130	45
   130-140	30
   140-150	8

   [10]
5. Explain different types of tabulations with suitable examples. [10]
   OR

--- Content provided by FirstRanker.com ---

6. Below are given the gains in weights (lbs.) of items on ten diets X and Y
   Diet X: 25 32 30 32 24 14 32
   Diet Y: 24 34 22 30 42 31 40 30 32 35
   Test at 5% level, whether the two diets differ significantly with regard to increase in weight. [10]
7. The following table gives the retail prices of a commodity in some shops selected at random in four cities:
   

   --- Content provided by FirstRanker.com ---

   Price(Rs.)	City
   22 24 27 23	A
   20 19 23	B
   19 17 21 18	C
   24 26 29 26	D

   Carry out the analysis of variance to test the significant of the difference between the price of commodity in four cities. [10]
   OR
8. Seven methods of imparting business education were ranked by the MBA students of two Universities as follows:
   

   Methods of teaching	I	II	III	IV	V	VI	VII
   Rank of students of University A	2	1	5	3	4	7	6
   Rank of students of University B	1	3	2	4	7	5	6

   Calculate rank correlation coefficient. [10]
9. The sales of a company in lakhs of rupees for the years 2011 to 2017 are given below:
   

   --- Content provided by FirstRanker.com ---

   Year	2011	2012	2013	2014	2015	2016	2017
   Sales	30	49	67	90	130	190	273

   Find trend values by using exponential trend method and estimate the value for 2018. [10]
   OR
10. The following table gives the aptitude test scores and Productivity indices of 10 workers selected at random:
    

    Aptitude Scores (X)	6	6	6	7	7	2	4	5	7	6	8
    Productivity Index (Y)	6	6	6	8	8	4	5	6	6	6	8

    Calculate the two regression equations. [10]

FirstRanker.com

--- Content provided by FirstRanker.com ---