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Bachelor of Business Administration
– BBA Semester 1, Spring 2015
BBA104 – Quantitative Techniques in
Business – 2 Credits
(Book ID: B1500)
Assignment - 30 marks
Note: Answer all questions. Kindly
note that answers for 10 marks questions should be approximately of
400 words. Each question is
followed by evaluation scheme.
Q1. What do you mean by
Measures of Central Tendency? Explain the Measures of Central Tendency.
Meaning of Measures of
Central Tendency, Explanation of the Measures of Central Tendency (Arithmetic
Mean, Geometric Mean, Median, Mode) (3,7 )10 marks
Answer.
Measures of Central
Tendency
The most important
objective of statistical analysis is to determine a single value for the entire
mass of data, which describes the overall level of the group of observations.
It is a single figure and describes the entire series of observations with their
varying sizes. A single number describing some features of a frequency
distribution is called descriptive statistics. There are various ways in which
frequency curves can differ from one another. Even though the
Q2. Briefly explain the
following:
a) Cumulative frequency
distribution
b) Pie Chart
c) Bar Chart
d) Histogram
e) Frequency polygon
(Explanation of
Cumulative frequency distribution, Explanation of Pie Chart, Explanation of Bar
Chart, Explanation of Histogram, Explanation of Frequency polygon) (2, 2, 2, 2,
2) 10 marks
Answer.
Cumulative frequency
distribution
Cumulative frequency
distribution
The cumulative
frequency distribution is a modified form of frequency distribution, as shown
in table 2.3. In a given row, the value of the last column is the cumulative
value of the frequencies shown in its last but one column up to that value.
Q3. a. Explain the
methods of determining trend in time series.
b. Fit a straight line
trend by method of least squares to the following data:
Year 2000 2001 2002 2003 2004
Production (in lakhs) 4 6 9 10 11
(Meaning of Trend
Methods of determining Trend, Fitting a straight line trend by method of least
squares) (2, 3, 5) 10 marks
Answer.
a) Trend Methods of determining Trend
b)
There
are four possible methods of secular trend which are the following:
c)
1.
Free hand method or graphic method
d)
2.
Semi-average method
e)
3.
Moving average method
f)
4. Least square method of fitting
mathematical curves
Free hand method or
graphic method
In free hand method the
given data are plotted as points on a graph paper against time. The time series
data (y) are
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