Memory Coffee has been getting many complaints from their customer about the quality of their coffee. The manager then decides to collect information on defective coffee through online questionnaire. The questionnaire was filled by a total of 394 customers in the past 10 weeks, and the data is as follows.

Week	No. Of Coffee Served	No. Of Servings with Defects	Reason for Defective Coffee
			Incorrect orders	Bad Coffee Taste	Bad Packaging	Others
1	43	10	2	5	3	0
2	32	15	4	7	4	0
3	34	6	2	3	1	0
4	33	17	4	10	3	0
5	60	30	2	20	8	0
6	50	14	7	7	0	0
7	40	20	3	15	2	0
8	31	16	4	7	2	3
9	41	18	3	10	3	2
10	30	19	5	5	5	4

Questions:

1. Construct a Pareto chart for the type of defects that have occurred.

2. Draw a cause-and-effect chart showing the possible reasons of customers dissatisfaction? (use four Ms)

3. If you were the manager, what is the main issue you would tackle to improve your

   business? How would you tackle it?