Question 2
[19]
The National Credit Regular conducted a survey amongst 10 financial institutions to
identify the percentage of bad debts in each company's debtors book. The bad debt
percentages are as follows.
7,3 9,2 6,2 11,7 9,2 5,6 4,9 9,2 7,3 4,7
2.1 Calculate the average percentage of bad debts amongst the 10 financial
institutions surveyed.
(3)
2.2 Find the median percentage of bad debts amongst the 10 financial institutions
surveyed.
(4)
2.3 Find the modal percentage of bad debts amongst the 10 financial institutions
surveyed.
(2)
2.4 Compute the first and third quartile of the percentage of bad debts amongst the
10 financial institutions surveyed.
(4)
2.5 Calculate the standard deviation of the percentage of bad debts amongst the 10
financial institutions surveyed.
(6)