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Bachelor
of Business Administration-BBA Semester II
BBA104/BB
0035–Quantitative Techniques in Business
Assignment
Set- 1
Q.1. What is a questionnaire?
Discuss the main points that you will take into account while
drafting a questionnaire?
b. What do you mean by
classification? What purpose does it serve?
ANSWER: The
‘questionnaire’ is a proforma containing a sequence of questions relevant to a
statistical enquiry. Since the questionnaire is the only medium of
communication between the investigator and the respondents, it must be designed
or drafted with utmost care and caution so that all relevant and essential
information for the enquiry may be collected without any difficulty, ambiguity,
and vagueness. Designing a questionnaire, therefore, requires a high degree of
skill and experience on the part of the investigator. The following points should
be observed in drafting the questionnaire:
1) The questionnaire should be as short as
possible. Many
Q.2. what do you mean by measures of
dispersion? What purpose do they serve?
b. What are the characteristics of a
good measure of dispersion?
ANSWER: The
word dispersion is used to describe the “degree of heterogeneity” in the data.
It is an essential characteristic indicating the extent to which observations
vary among themselves. The dispersion of a given set of observations will be
zero only when all of them are equal.
A business head may be interested to know the average sales of each
product and the amount of fluctuations in average sales because he is not only
interested in the average level of performance but also in the variability of
such performance. By knowing the variability he can take into consideration
this aspect for decision making purposes.
Q.3. What is scatter diagram?
How does it help in ascertaining the nature and degree of linear correlation
between two variables?
ANSWER:The Scatter diagram
When statistical data relating to the simultaneous
measurements of two variables are available, each pair of observations can be
geometrically represented by a point on the graph paper. The values of the one
variable will be shown along the x-axis and the other variable along Y-axis. If
these are n pairs of observations, finally the graph paper will contain n
points. This diagramm
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