Business Statistics question, Hons 3rd Year Exam-2021

Business Statistics question

Hons 3rd Year Exam-2021

National University 



Subject Code: 232603

Subject: Business Statistics


Group A

(Answer any ten questions)

Marks – 1 × 10 = 10

a) What is business statistics?

Ans: Business Statistics is a science assisting us to make, decision under uncertainties based on some numerical and measurable scale.


b) What is population?


Ans: A population is the collection of all possible objects having certain characteristic under a study.


c) When AM, GM and HM are equal?


Ans: If each value of a observation are equal then arithmetic mean, geometrie mean & harmoniemean are equal.

d) which measure suitable for measures of dispersion?



e) What is correlation?



f) What is the range between 1 and -1?


Ans: Range Highest value-Lowest value

= 1- (-1)

= 2


g) What is regression analysis?


And: Regression Analysis is a mathematical measure of the average relationship between two or more variables in terms of original units of the data.


h) What is sampling?


And: The methods for selecting sample from a Population is known in Sampling.


i) Which test is known as small test?




j) What is Kurtosis?


k) What do you mean by r+1?


Ans: The value of r+1, Means the perfect positive correlation.


l) What is Index Number?


Group B

(Answer any five questions)

Marks – 4 × 5 = 20

2. Discuss the scope of business Statistics.


3. Describe the sources of secondary data.


4. Distinguish between absolute and relative measure of dispersion.


5. Draw a pie-chart from the following data:

Cost of materials Tk. 40,000; Cost of labour