WMT	SPY
Date	Adj Close	Adj Close
5/1/2011	43.4721	110.6702
6/1/2011	42.1114	108.2665
7/1/2011	41.77064	106.6267
8/1/2011	42.15102	100.7648
9/1/2011	41.4263	93.28702
10/1/2011	45.27356	104.0044
11/1/2011	47.01365	103.5817
12/1/2011	47.70008	104.0044
1/1/2012	49.28323	109.5177
2/1/2012	47.45198	114.2714
3/1/2012	49.15472	117.4321
4/1/2012	47.63213	117.1594
5/1/2012	53.21925	110.1233
6/1/2012	56.75518	114.0015
7/1/2012	60.58934	115.9478
8/1/2012	59.09961	118.8525
9/1/2012	60.40139	121.2186
10/1/2012	61.3999	119.6479
11/1/2012	58.94454	120.325
12/1/2012	55.84265	120.5451
1/1/2013	57.56805	127.6146
2/1/2013	58.25113	129.2428
3/1/2013	61.58425	133.5563
4/1/2013	64.37531	136.7276
5/1/2013	61.98984	139.9558
6/1/2013	62.07	137.3613
7/1/2013	64.94478	145.2241
8/1/2013	60.81179	140.8685
9/1/2013	62.00261	144.6215
10/1/2013	64.34151	152.0561
11/1/2013	67.91279	156.5626
12/1/2013	65.96789	159.7544
1/1/2014	62.97065	154.9601
2/1/2014	62.98752	162.0132
3/1/2014	64.44623	162.6394
4/1/2014	67.64558	164.4928
5/1/2014	65.15057	168.3101
6/1/2014	64.10228	170.9657
7/1/2014	62.82998	169.4764
8/1/2014	64.46946	176.1646
9/1/2014	65.72793	172.9259
10/1/2014	65.55605	177.8258
11/1/2014	75.24288	182.711
12/1/2014	73.81607	181.2472
1/1/2015	73.45057	176.8477
2/1/2015	72.54302	186.7874
3/1/2015	71.09093	183.0367
4/1/2015	67.86597	185.6617
5/1/2015	64.57918	188.0486
6/1/2015	62.06422	183.3372
7/1/2015	62.983	188.3905
8/1/2015	56.63919	176.9082
9/1/2015	57.12285	171.5025
10/1/2015	50.42739	187.0579
11/1/2015	51.83696	187.7417
12/1/2015	54.00417	183.4055
1/1/2016	58.95163	175.3115
2/1/2016	58.93385	175.1667
3/1/2016	60.84384	185.9902
4/1/2016	59.84447	187.6863
5/1/2016	63.34367	190.8791
6/1/2016	65.82678	190.5517
7/1/2016	65.7817	198.5284
8/1/2016	64.40244	198.7662
9/1/2016	65.46051	197.7786
10/1/2016	63.55442	195.3315
11/1/2016	63.92658	202.5272
12/1/2016	62.73753	205.422
1/1/2017	61.01085	210.3304
2/1/2017	64.84116	218.5946
3/1/2017	65.89245	217.9198
4/1/2017	69.23168	221.0403
5/1/2017	72.3811	224.1599
6/1/2017	70.15851	224.4941
7/1/2017	74.15405	230.2257
8/1/2017	72.37414	230.8974
9/1/2017	72.89468	234.3866
10/1/2017	81.44911	241.1003
11/1/2017	90.70322	248.4698
12/1/2017	92.12118	250.2043
1/1/2018	99.96831	265.6566
2/1/2018	84.41039	255.9972
3/1/2018	83.4351	247.987
4/1/2018	83.45141	250.267
5/1/2018	77.86659	256.3507
6/1/2018	81.30956	256.6725
7/1/2018	84.70813	267.3765
8/1/2018	91.00214	275.9111
9/1/2018	89.66876	276.3008
10/1/2018	95.75107	258.3716
11/1/2018	93.23986	263.1642
12/1/2018	88.94309	238.5996
1/1/2019	92.00137	259.2081
2/1/2019	95.03513	267.6105
3/1/2019	93.63345	271.2596
4/1/2019	99.26256	283.5849
5/1/2019	97.91126	265.5004
6/1/2019	107.213	282.6011
7/1/2019	107.1062	288.2692
8/1/2019	110.8712	283.4425
9/1/2019	115.7269	287.6295
10/1/2019	114.3423	295.3451
11/1/2019	116.1267	306.036
12/1/2019	115.8829	313.3873
1/1/2020	112.1419	314.8009
2/1/2020	105.4716	289.8794
3/1/2020	111.2898	252.1988
4/1/2020	119.584	285.8952
5/1/2020	122.0533	299.5168
6/1/2020	118.361	303.493
7/1/2020	127.867	322.7805
8/1/2020	137.205	345.3096
9/1/2020	138.8208	331.0547
10/1/2020	137.6699	324.0925
11/1/2020	151.6006	359.3463
12/1/2020	143.0278	371.0777
1/1/2021	139.9059	368.8619
2/1/2021	129.3798	379.1183
3/1/2021	135.2652	395.0362
4/1/2021	139.63	420.06

What is Walmarts beta for these 10 years?

**NOTE** (the risk-free rate in this problem is equal to ZERO)

**Please answer accurate to two decimales i.e. 0.045

What is the firm-specific variance for Walmart over this period?

**Please answer accurately to four decimals i.e. 0.0045

What is Walmart's firm-specific (residual) return for May 2012? (The date is 5/1/12).