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NMIMS 2019 ASSIGNMENTS - The Stock Price details of TATA TELESERVICES (MAHARASHTRA) LTD. Are given b
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Business Statistics

The Stock Price details of TATA TELESERVICES (MAHARASHTRA) LTD. Are given below
Date Close No. of
Shares No. of
Trades 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

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
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 Co-Operation & 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.

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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