'Who Told You' is a nyama choma outfit located on the Nairobi Kiambu road specializing in food

provision (especially nyama choma), sodas and alcoholic beverages. Their target is mainly young

couples and their children particularly over the weekends and public holidays. Who Told You has

been operational for the last 10 years and the net profit over these years is as shown in the table

below. As the table below shows, management of 'Who Told You' is concerned about the

performance of their outfit.

Year Net Profit (KShs Million)

2010 8.4

2011 7.2

2012 6.0

2013 5.0

2014 5.2

2015 4.8

2016 4.2

2017 4.0

2018 3.6

2019 3.2

Required:

(a) Management of 'Who Told You' has contracted you to determine why the performance

has been declining. Clearly explain how you carry out this assignment.

(b) Explain how can you increase the sample size of data shown above.