Compare the standard deviations of the two cars and write a short essay as to which car, if this history is a good predictor of future performance next year, is riskier in terms of per-unit sales. You may use Excel.

Year	Sold CAR #1
2014	18,647
2015	24,002
2016	26,802
2017	29,952
2018	14,427
2019	20,303
2020	11,558
2021	158,774

Year	Sold CAR #2
2014	99
2015	2,727
2016	21,602
2017	27,252
2018	19,602
2019	26,102
2020	7,307
2021	14,573