Time series graph analysis The table below shows the number of complaints a company received from customers over three years: Quarter 1 Quarter 2 Quarter 3 Quarter 4 Year 1 25 53 41 36 Year 2 38 66 45 40 Year 3 35 79 49 65 a) Calculate appropriate moving averages. (2 marks) b) To represent the data, draw a time series graph, plot moving averages and create a trend line. marks) c) Describe what the time series graph and trend line show about the number of complaints this company received from customers over the three years. (2 marks)