Give the answer and analysis, this is the topic of statistics.

Question 3 Round off your answer to 1 decimal place. (a) The table below shows the price of a commodity from April to July 2020. Month April May June July Price ( RM) 12 13 13.50 12.50 (i) Calculate price index in May, June and July using April as the base month. (3 marks) (ii) Calculate the percentage point changes between April and May, May and June, also June and July using answers obtained from (3) (a) (i) above. (3 marks) (b) The following table shows the price and consumption of 4 commodities in 2018 and 2021. Per capital Consumption Price (RM) Commodity Unit (per month) 2018 2021 2018 2021 W kg 4.0 4.5 18.00 28.00 X kg 5.0 4.0 4.50 6.00 Y kg 6.0 8.0 2.50 3.60 Z kg 3.0 4.5 12.00 15.00 (i) Calculate the simple aggregate price index for 2021 with 2018 as base year. (3 marks) (ii) Calculate the Laspeyres index for 2021 with 2018 as the base year. (4 marks) (iii) Calculate the Paasche index for 2021 with 2018 as base year. (4 marks) (iv) Calculate the Fisher index for 2021 with 2018 as base year. (2 marks) (c) State one advantage of using Laspeyres Index. (1 mark)