We found strong, negative, significant relationship between
Cost of Sales to Sales Ratio and profitability (ROA). The
results confirmed hypothesis H1 (Basing on role that control of
costs incurred plays in process of income generation we
assume, that there is negative relationship between the cost of
sales to sales ratio and ROA) is corroborated.
Hypothesis H2 (significance of debt ratio as determinant of
ROA) is not corroborated. We found week, positive
relationship between debt ratio and profitability.
We found weak, negative relationship between Days Sales
Outstanding and profitability (ROA). Therefore, Hypothesis 3
is corroborated.
We found weak, negative relationship between Days
Inventories Outstanding and profitability (ROA). Therefore,
Hypothesis 4 is corroborated.
There is weak, positive relationship between Days Payables
Outstanding and profitability. Therefore, hypothesis H5 is
corroborated
We found strong, negative, significant relationship between
CCC and profitability (ROA) in 2008 year. But in 2009 and
2010 we observed weak, positive relationship between CCC
and profitability. Therefore, hypothesis H6 is partially
corroborated. The variable seems to be interesting in view of a
possible studies in the future.
Multiple regression may be useful in determining whether
or not a particular effect is present and in measuring the
magnitude of a particular effect. Therefore, the regression
analysis is done. Table VI reports the regression results of the
overall relationship which exists between independent
variables and ROA.