Business Statistics question
Hons 3rd Year Exam-2021
Subject Code: 232603
Subject: Business Statistics
(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)
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?
(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