Shares Jak and Turner have the following historical returns:

Year	Share Jak Returns (%)	Share Turner Returns (%)
2016	-4	-3.5
2017	5	-4.8
2018	21.45	23.39
2019	41.63	47.78
2020	20.33	11.81
2021	36.00	33.90
2022	12	13

Required:

Calculate and explain which of the two shares had the most volatile returns over the seven -year period. (25 marks)