1.g . calculate the weekly return and standard deviation as at end of December 2020.

Date

open

high

low

close

adj close

volume

weekly return

Apr 26, 2020	2.37	2.22	2.41	2.2	79.33M	7.24%
Apr 19, 2020	2.21	2.26	2.39	2.18	131.23M	-0.90%
Apr 12, 2020	2.23	2.06	2.27	2.04	94.65M	7.73%
Apr 05, 2020	2.07	2.07	2.19	2.03	96.01M	1.97%
May 31, 2020	2.6	2.32	2.69	2.3	132.37M	12.07%
May 24, 2020	2.32	2.29	2.32	2.23	41.04M	1.31%
May 17, 2020	2.29	2.28	2.41	2.23	93.61M	1.33%
May 10, 2020	2.26	2.35	2.36	2.24	50.08M	-5.04%
May 03, 2020	2.38	2.35	2.4	2.23	44.65M	0.42
Jun 28, 2020	2.58	2.53	2.63	2.49	36.32M	0.00%
Jun 21, 2020	2.58	2.7	2.71	2.53	56.47M	-5.84%
Jun 14, 2020	2.74	2.6	2.81	2.46	142.48M	5.38%
Jun 07, 2020	2.6	2.66	2.77	2.46	114.72M	0.00%
Jul 26, 2020	2.28	2.31	2.33	2.26	46.63M	-2.15%
Jul 19, 2020	2.33	2.5	2.5	2.32	57.69M	-6.43%
Jul 12, 2020	2.49	2.53	2.56	2.47	45.29M	-1.58%
Jul 05, 2020	2.53	2.58	2.61	2.48	48.35M	-1.94%