Course: Business Statistics
Internal Assignment Applicable for June 2019 Examination
Assignment Marks: 30
1. The Stock Price details of TATA TELESERVICES (MAHARASHTRA) LTD. are
given below
Internal Assignment Applicable for June 2019 Examination
Assignment Marks: 30
1. The Stock Price details of TATA TELESERVICES (MAHARASHTRA) LTD. are
given below
Date Close No. of No. of Total Turnover
01-03-2019 3.09 69,242 100 2,14,257 |
||
05-03-2019
|
3.35 1,97,344 251
|
6,51,621
|
06-03-2019
|
3.41 1,58,205 160
|
5,47,942
|
07-03-2019
|
3.55 4,00,183 433
|
13,99,537
|
08-03-2019
|
3.49 2,73,890 503
|
9,42,944
|
11-03-2019
|
3.5 1,46,178 145
|
5,12,714
|
12-03-2019
|
3.52 80,672 109
|
2,83,868
|
13-03-2019
|
3.46 1,49,428 116
|
5,14,536
|
14-03-2019
|
3.4 72,539 183
|
2,44,876
|
Shares
Trades
For the above sample, determine the following measures:
a. The mean closing price
b. The standard deviation of total number of shares
c. The median value of number of trades
d. The 75th percentile value of total turnover
Analyze the above data using descriptive statistics and comment on the relationship between
the various variables (10 Marks)
2. Let’s assume that you have gathered the following information on the prices for different
management books and the number of pages that each book contains. (10 Marks)
For the above sample, determine the following measures:
a. The mean closing price
b. The standard deviation of total number of shares
c. The median value of number of trades
d. The 75th percentile value of total turnover
Analyze the above data using descriptive statistics and comment on the relationship between
the various variables (10 Marks)
2. Let’s assume that you have gathered the following information on the prices for different
management books and the number of pages that each book contains. (10 Marks)
Book
|
Pages
(x) |
Price
(y) |
A
|
500
|
700
|
B
|
700
|
750
|
C
|
750
|
900
|
D
|
590
|
650
|
E
|
540
|
750
|
F
|
650
|
700
|
G
|
480
|
450
|
a. Develop a least-squares estimated regression line.
b. Compute the coefficient of determination and explain its meaning.
3. The OECD cut forecasts again for the global economy in 2019 and 2020, following on
from previous downgrades in November, as it warned that trade disputes and uncertainty
over Brexit would hit world commerce and businesses. The Organization for Economic CoOperation & Development forecast in its interim outlook report that the world economy
would grow 3.3 percent in 2019 and 3.4 percent in 2020.
Those forecasts represented cuts of 0.2 percentage points for 2019 and 0.1 percentage points
for 2020, compared to the OECD’s last set of forecasts in November. “High policy
uncertainty, ongoing trade tensions, and a further erosion of business and consumer
confidence are all contributing to the slowdown,” said the OECD in its report. “Substantial
policy uncertainty remains in Europe, including over Brexit. A disorderly exit would raise
the costs for European economies substantially,” added the OECD.
Europe remains impacted by uncertainty over Britain’s plans to exit the European Union,
the U.S. - China trade spat and other weak spots, such as signs of a recession in Italy. For
Germany, Europe’s largest economy, the OECD more than halved its 2019 GDP growth
forecast to 0.7 percent from 1.6 percent previously. It predicted a light recovery to 1.1
percent growth in 2020. Germany’s export-reliant economy is particularly affected by
weaker global demand and rising trade barriers.
(Source: https://www.reuters.com/article/us-oecd-economy/global-economic-growthforecasts-cut-again-by-oecd-idUSKCN1QN13N)
a. In your opinion what forecasting tools are used in the above case for forecasting the
global economy? Justify. (5 Marks)
b. Are the forecasts accurate? Comment. What all errors are possible in the forecasts
and how to deal with such errors? (5 Marks)
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