1. Provide a critical
evaluation of different
business data/ information by applying different data analysis methods considering
data types, sources and sufficiency,
a)
the importance of converting data
into information,
b)
and the significance of different
data analysis methods to investigate the relationships between different dataset
variables such as:
c)
the relationship between cars’ sales
& GDP growth date,
d)
the relationship between cars’ sales
& population growth rate, the relationship between respondent’s income &
his/her opinion about the car’s price,
e)
And the relationship between respondent’s
education level & his/her preferred car and to help Renault Corporation determine
the expected demand level.
2. Analyze and evaluate Renault cars’ sales
data in Mersin and Bursa by:
a)
Applying descriptive data analysis
for each of them. And show how you can use the results of analyzing these two
data series to determine the city where the sales were more stable.
b)
Evaluating the feasibility of calculating
measures of central tendency and measures of variability for the
questionnaire and sales data to generate useful information that can help the
managers understand the market conditions and make the right decisions.
3. Evaluate the differences in application
between inferential statistics and measuring associations by:
a)
Applying inferential statistics (sampling)
to suggest an interval that can contain the mean of customers’ money amount
spent per shopping trip in Renault care accessories store during the next two
months according to the data available in the random sample (data is available
in “Customers` Purchases Sample” sheet of Excel file). The financial manager asks
for significance level for mean of 1% and 5%. Compare and interpret the results.
b)
Applying measuring association between
each of the two cost items and sales amounts in Mersin branch (you can use Excel
to run simple linear regression analysis and show scatter diagram). Depending
on P value, determine whether the relationship between commercials costs and sales
amounts or between training costs and sales amounts is statistically significant
at the significance level of 5%. (data is available in Sales Training & Advertising
Data sheet of the Excel file).
4. Critically evaluate the differences between
descriptive, confirmatory, and exploratory analysis by:
a)
Explaining why researchers generally
depend on exploratory method when they run qualitative statistical studies?
b)
Suggesting an appropriate Null and Alternative
hypotheses to be tested in order to study the relationship between training
expenditure and sales amounts and using the results of simple linear regression
analysis between these two variables to test these hypotheses.
c)
Explain applying which analysis
method in task 3(b) is more appropriate between confirmatory and descriptive
analysis.
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