Question: From January 04, 2020 to October 21, 2020, what is DTE Energy's Skewness? Using unadjusted prices, write down the indicator formula, collect the raw data, calculate the answer, and keep four decimal places. Please list the raw data and key calculation process.
Formula: Skew(r) = E[(r - \mu)^3] / \sigma^3
Data:
date,close
2020-01-03,109.79574584960938
2020-01-06,109.77021026611328
2020-01-07,109.40425872802734
2020-01-08,109.3446807861328
2020-01-09,109.49787139892578
2020-01-10,109.73616790771484
2020-01-13,110.28936004638672
2020-01-14,110.8595733642578
2020-01-15,112.33191680908205
2020-01-16,113.12340545654295
2020-01-17,113.89787292480467
2020-01-21,113.98297882080078
2020-01-22,112.86808776855467
2020-01-23,113.95744323730467
2020-01-24,112.98723602294922
2020-01-27,112.58723449707033
2020-01-28,112.73191833496094
2020-01-29,112.2978744506836
2020-01-30,113.31914520263672
2020-01-31,112.8595733642578
2020-02-03,113.85531616210938
2020-02-04,113.27659606933594
2020-02-05,114.42552947998048
2020-02-06,114.22127532958984
2020-02-07,113.71063995361328
2020-02-10,113.58297729492188
2020-02-11,114.0595703125
2020-02-12,113.8297882080078
2020-02-13,113.65957641601562
2020-02-14,114.0595703125
2020-02-18,114.59574127197266
2020-02-19,114.10212707519533
2020-02-20,114.0
2020-02-21,114.8595733642578
2020-02-24,113.07234191894533
2020-02-25,109.03829956054688
2020-02-26,106.15319061279295
2020-02-27,100.43404388427734
2020-02-28,95.03829956054688
2020-03-02,99.26808166503906
2020-03-03,96.1872329711914
2020-03-04,101.5404281616211
2020-03-05,98.9446792602539
2020-03-06,98.82553100585938
2020-03-09,87.25957489013672
2020-03-10,91.92340087890624
2020-03-11,88.60425567626953
2020-03-12,77.5999984741211
2020-03-13,82.07659912109375
2020-03-16,70.66383361816406
2020-03-17,75.2170181274414
2020-03-18,65.53191375732422
2020-03-19,72.68936157226562
2020-03-20,70.63829803466797
2020-03-23,65.3702163696289
2020-03-24,73.63404083251953
2020-03-25,78.70638275146484
2020-03-26,83.38723754882812
2020-03-27,83.00425720214844
2020-03-30,84.62127685546875
2020-03-31,80.82553100585938
2020-04-01,74.96170043945312
2020-04-02,75.88935852050781
2020-04-03,74.15319061279297
2020-04-06,81.73616790771484
2020-04-07,82.93617248535156
2020-04-08,88.37446594238281
2020-04-09,94.68085479736328
2020-04-13,92.4595718383789
2020-04-14,92.20425415039062
2020-04-15,89.19149017333984
2020-04-16,86.44255065917969
2020-04-17,90.0851058959961
2020-04-20,85.75318908691406
2020-04-21,84.37446594238281
2020-04-22,87.1148910522461
2020-04-23,85.96595764160156
2020-04-24,87.67659759521484
2020-04-27,87.38723754882812
2020-04-28,90.485107421875
2020-04-29,91.31063842773438
2020-04-30,88.28936004638672
2020-05-01,85.68510437011719
2020-05-04,85.8127670288086
2020-05-05,87.1574478149414
2020-05-06,85.5404281616211
2020-05-07,84.01702117919922
2020-05-08,86.17872619628906
2020-05-11,84.0255355834961
2020-05-12,84.47659301757812
2020-05-13,81.66808319091797
2020-05-14,83.40425872802734
2020-05-15,82.85106658935547
2020-05-18,87.86383056640625
2020-05-19,87.5404281616211
2020-05-20,87.8723373413086
2020-05-21,85.99148559570312
2020-05-22,86.91063690185547
2020-05-26,89.65957641601562
2020-05-27,90.63829803466795
2020-05-28,91.71063995361328
2020-05-29,91.54893493652344
2020-06-01,92.2723388671875
2020-06-02,93.96595764160156
2020-06-03,96.20425415039062
2020-06-04,94.57872009277344
2020-06-05,97.76170349121094
2020-06-08,99.92340087890624
2020-06-09,97.8723373413086
2020-06-10,96.11914825439452
2020-06-11,89.36170196533203
2020-06-12,89.42127990722656
2020-06-15,90.22978973388672
2020-06-16,91.89787292480467
2020-06-17,91.2170181274414
2020-06-18,91.6851043701172
2020-06-19,88.30638122558594
2020-06-22,90.85106658935548
2020-06-23,91.28510284423828
2020-06-24,89.59149169921875
2020-06-25,89.29361724853516
2020-06-26,88.61276245117188
2020-06-29,90.68936157226562
2020-06-30,91.48936462402344
2020-07-01,93.61701965332033
2020-07-02,93.59149169921876
2020-07-06,92.28085327148438
2020-07-07,91.1404266357422
2020-07-08,91.8297882080078
2020-07-09,90.7829818725586
2020-07-10,91.49787139892578
2020-07-13,92.34893798828124
2020-07-14,92.57872009277344
2020-07-15,92.93617248535156
2020-07-16,93.36170196533205
2020-07-17,94.90213012695312
2020-07-20,92.9446792602539
2020-07-21,94.56169891357422
2020-07-22,97.40425872802734
2020-07-23,97.8297882080078
2020-07-24,97.50638580322266
2020-07-27,97.02978515625
2020-07-28,97.55744934082033
2020-07-29,98.0595703125
2020-07-30,97.61701965332033
2020-07-31,98.40850830078124
2020-08-03,96.91063690185548
2020-08-04,98.41702270507812
2020-08-05,98.2978744506836
2020-08-06,99.52340698242188
2020-08-07,101.1574478149414
2020-08-10,102.32340240478516
2020-08-11,99.90637969970705
2020-08-12,101.1148910522461
2020-08-13,100.56169891357422
2020-08-14,100.17872619628906
2020-08-17,99.60851287841795
2020-08-18,99.17446899414062
2020-08-19,99.59149169921876
2020-08-20,98.26383209228516
2020-08-21,98.57872009277344
2020-08-24,100.4000015258789
2020-08-25,99.57447052001952
2020-08-26,98.50212860107422
2020-08-27,99.59149169921876
2020-08-28,100.30638122558594
2020-08-31,100.99574279785156
2020-09-01,100.24681091308594
2020-09-02,102.51914978027344
2020-09-03,101.37872314453124
2020-09-04,101.1148910522461
2020-09-08,100.49361419677734
2020-09-09,101.88085174560548
2020-09-10,100.3574447631836
2020-09-11,100.8000030517578
2020-09-14,102.45106506347656
2020-09-15,100.90213012695312
2020-09-16,101.31063842773438
2020-09-17,99.455322265625
2020-09-18,95.3446807861328
2020-09-21,94.72340393066406
2020-09-22,95.3276596069336
2020-09-23,95.23403930664062
2020-09-24,96.16170501708984
2020-09-25,97.63404083251952
2020-09-28,97.71063995361328
2020-09-29,97.36170196533205
2020-09-30,97.90637969970705
2020-10-01,96.544677734375
2020-10-02,97.1574478149414
2020-10-05,97.455322265625
2020-10-06,98.2127685546875
2020-10-07,97.455322265625
2020-10-08,103.71914672851562
2020-10-09,102.3744659423828
2020-10-12,102.79148864746094
2020-10-13,101.33616638183594
2020-10-14,101.61701965332033
2020-10-15,100.3744659423828
2020-10-16,101.53191375732422
2020-10-19,100.5702133178711
2020-10-20,103.26808166503906
2020-10-21,103.3702163696289

Indicator data:
Answer: -0.4887