Question 1 [10 marks) The table below shows information about the number of customers (in thousand) of a coffee shop per quarter in years 2018 to 2020. Year 2019 2020 Quarter 12l3412341l23 Numberofcustomers 1.2 0.9l0.7 1.8 1.5 1.1 0.8 2.1 1,6l1.2 0.9 (a) In a short paragraph, describe the trend and seasonal variation of the number of customers (in thousand) in this coffee shop by refem'ng to the following time series plot: Number of Customers (in thousand) 2018 2018 2018 2018 2019 2019 2019 2019 2020 2020 2020 2020 Q1 Q2 Q3 Q4 01 Q2 Q3 Q4 Q1 Q2 0.3 Q4 (b) Find the trend by calculating the 4period moving average. (Present your work in a table format and correct all answers to 4 decimal places.)