# BBS (TU) Question Paper 2071 – Business Statistics First Year

## Tribhuvan University(TU) | Old is Gold Question Paper of Business Statistics (MGT 202) For: BBS First Year / Management

Year: 2071 (2014) | Full Marks: 100 | Pass Marks: 35
Candidates are required to give their answers in their own words as far as practicable.

Attempt Eight questions from Group A and Group B is compulsory.

## Group ‘A’ [80]

1. (a) Define statistics. What are the limitations of statistics?
(b) Construct suitable diagram for the following data:

 Items Food Cloths Fuel Rent Misce. Expenditure 300 180 120 600 240

2. From the following distribution of marks of 250 students of a campus, find the minimum pass mark if only 20% of the students has failed and also find the minimum marks obtained by the top 25% of the students.

 Marks 0-20 20-40 40-50 50-60 60-80 80-100 No. of Students 25 50 75 45 30 25

3. If the mode for the following distribution is Rs. 24, find the mean deviation from mean

 Expenditures in Rs. 0-10 10-20 20-30 30-40 40-50 No. of families 14 23 27 ? 15

4. The mean weight of 150 students is 60 kg. The mean weight of boys is 70 kg with a standard deviation of 10 kg. For the girls, the mean weight is 55 kg and standard deviation is 15 kg. Find no. of boys and girls in a class and combined standard deviation.

5. (a) pearson’s coefficient of skewness for a distribution is 0.4 and its coefficient of 30%. If mode is 88, find mean and median.
(b) The first three moments of a distribution about the value 4 are 1, 4 and 10. find the mean and variance and also the 3rd moment about mean.
6. (a) The coefficient of rank correlation of the marks obtained by 10 students in English and Statistics was found to be 0.5.
It was later discovered in rank obtained by one student was wrongly taken as 7 instead of 9. Find the correct rank correlation.
(b) An urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. Find the probability that the ball drawn is (1) Red ball and (2) not red ball.

7. Fit a straight line trend by method of least square and obtain trend values from following data:

 Year 2005 2006 2007 2008 2009 Production in ‘000 tons 100 120 110 140 80

Also predict the sales for the year 2015.

8. Compute suitable index number for the year 2010 with 2008 as base year from the following data:

 Year Product X Product Y Product Z Price Quantity Price Quantity Price Quantity 2008 4 50 3 10 2 5 2010 10 40 8 8 4 4

If the income of a family in 2008 was 10, 000 what should be the income of same family in 2010 so that the living standard would be same?

9. Prove the following by using properties of determinants.

10 . Diary corporation is planning to produce 1200 kgs of baby food mixing 3 nutrients A, B and C. The 3 nutrient components per kg cost Rs. 12, Rs. 16 and Rs. 14 respectively. The final output of 1 kg of baby food pack must contains nutrient C to be twice that of nutrient A. The budget available to buy component nutrients are to the corporation is Rs. 18480. Find amount of each nutrient which should be mixed in the final output by using matrix method.

## Group ‘B’ (Comprehensive Answer Question) [20]

11. From the following bi-variate table. Compute two regression coefficients, coefficient of variations and correlation coefficient, Estimate the sales revenue when advertisement cost is Rs. 90 thousand.

 Sales revenue in ‘000 Rs. Advertisement cost in ‘000 Rs. 5-15 15-25 25-35 35-45 45-55 75-125 4 1 — — — 125-175 7 6 2 1 3 175-255 1 3 4 2 2 225-275 1 1 3 4 — 275-325 3 1 1 — —
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1. saroj kumar dhungana
Posted August 20, 2015 at 6:03 pm

solution of these questions

• basanta moktan
Posted September 22, 2015 at 4:51 am

to find out the solution this question

• saruna shrestha
Posted July 22, 2016 at 11:16 am

plz to find outthe solution this question

2. Kajal
Posted December 31, 2015 at 8:21 pm

Wow! Thank you 🙂 keep it up (y)

3. prabin gautam
Posted March 24, 2016 at 12:26 pm

solution of question paper 2071

4. Chunu pun
Posted July 24, 2016 at 9:35 am

What is the solution of question no.4

• Chunu pun
Posted July 24, 2016 at 9:44 am

How to find solution of question no.4

5. Ashish Gautam
Posted August 23, 2016 at 10:31 am

soln of 11 fast needed

Posted December 18, 2016 at 7:19 pm

ramroo lago

Posted December 18, 2016 at 7:20 pm

i will hope i pass bbs

Posted March 6, 2017 at 4:07 pm

BBS1st year ko model question solution solved garidenoss sir plz

9. rajesh bk
Posted May 13, 2017 at 12:11 pm

Hello sir, business statistics ko all year ko model question matra Pdf file ma upload garnuna.

10. Tripti Bhattarai
Posted September 10, 2017 at 3:06 pm