One branch of a bank has 849 customers who have credit balances in a certain type of current account. The sizes of the balances in these accounts, to the nearest £, have been arranged in the following grouped frequency distribution:
![919_2a0c03f3-ddc9-47cf-8988-d54804c83e11.png](https://secure.tutorsglobe.com/CMSImages/919_2a0c03f3-ddc9-47cf-8988-d54804c83e11.png)
(a) Plot a histogram to represent this distribution.
(b) Find the cumulative relative frequency for each class.
(c) Plot a cumulative relative frequency distribution of the distribution.