Risk and return - Calculate the return and standard deviation of each stock.

You are considering investing in stocks and have identified the following potential stocks. They are Alibaba Group Holding Limited (BABA), Amazon (AMZN), Kogan (KGN) and China Petroleum & Chemical (386). The table below shows the historical share prices ($) between 2016 and 2022. Note that these prices are recorded on the 1^st day of the year, for example, 1^st of January 2020. Students should assume no dividend is distributed during this period and ignore the exchange rate conversion.

Year	Amazon (NASDAQ: AMZN)	Alibaba (NYSE: BABA)	Kogan (ASX: KZN)	China Petroleum & Chemical (HKG: 386)
2016	587	67.03	1.715	4.33
2017	823.48	101.31	1.53	6.21
2018	1450.89	204.29	7.15	6.76
2019	1718.73	168.49	4.3	6.57
2020	2008.72	206.59	5.16	4.13
2021	3206.2	253.83	17.99	3.17
2022	2991.47	125.79	6.19	4.08

Calculate the return and standard deviation of each stock. Posting this a second time because the first answer isn't correct. please dont use ai to answer- it isn't correct.