Question: During September 09, 2019 to August 09, 2020, how many times did Norwegian Cruise Line Holdings's 10-day and 60-day Weighted Moving Average lines form a death cross? (Weights are 1, 2, ..., n) 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: WMA_n = \sum_{i=0}^{n-1} (n-i) * P_{t-i} / \sum_{j=1}^{n} j
Data:
date,close
2019-06-14,54.27999877929688
2019-06-17,53.040000915527344
2019-06-18,53.75
2019-06-19,53.90999984741211
2019-06-20,52.560001373291016
2019-06-21,51.11000061035156
2019-06-24,50.83000183105469
2019-06-25,50.86000061035156
2019-06-26,50.40999984741211
2019-06-27,51.84000015258789
2019-06-28,53.630001068115234
2019-07-01,52.81999969482422
2019-07-02,53.72999954223633
2019-07-03,52.7599983215332
2019-07-05,51.95000076293945
2019-07-08,50.25
2019-07-09,50.7599983215332
2019-07-10,49.650001525878906
2019-07-11,49.619998931884766
2019-07-12,49.790000915527344
2019-07-15,50.36000061035156
2019-07-16,50.81999969482422
2019-07-17,49.400001525878906
2019-07-18,49.27999877929688
2019-07-19,48.59999847412109
2019-07-22,47.91999816894531
2019-07-23,48.45000076293945
2019-07-24,49.459999084472656
2019-07-25,48.7599983215332
2019-07-26,49.040000915527344
2019-07-29,49.09999847412109
2019-07-30,48.5
2019-07-31,49.43999862670898
2019-08-01,48.56999969482422
2019-08-02,47.45000076293945
2019-08-05,46.04999923706055
2019-08-06,46.91999816894531
2019-08-07,47.63999938964844
2019-08-08,48.59999847412109
2019-08-09,49.65999984741211
2019-08-12,49.83000183105469
2019-08-13,50.43999862670898
2019-08-14,48.90999984741211
2019-08-15,49.11000061035156
2019-08-16,50.47999954223633
2019-08-19,51.34999847412109
2019-08-20,50.97999954223633
2019-08-21,50.900001525878906
2019-08-22,50.5
2019-08-23,49.720001220703125
2019-08-26,49.47999954223633
2019-08-27,49.09000015258789
2019-08-28,49.56999969482422
2019-08-29,50.22999954223633
2019-08-30,50.75
2019-09-03,50.58000183105469
2019-09-04,51.040000915527344
2019-09-05,52.310001373291016
2019-09-06,52.119998931884766
2019-09-09,52.93999862670898
2019-09-10,54.66999816894531
2019-09-11,54.59999847412109
2019-09-12,54.41999816894531
2019-09-13,54.68000030517578
2019-09-16,53.34000015258789
2019-09-17,53.959999084472656
2019-09-18,53.880001068115234
2019-09-19,53.77000045776367
2019-09-20,53.66999816894531
2019-09-23,53.5099983215332
2019-09-24,53.11000061035156
2019-09-25,53.29999923706055
2019-09-26,51.2599983215332
2019-09-27,51.02000045776367
2019-09-30,51.77000045776367
2019-10-01,50.7599983215332
2019-10-02,49.13999938964844
2019-10-03,48.13999938964844
2019-10-04,48.43999862670898
2019-10-07,48.560001373291016
2019-10-08,47.16999816894531
2019-10-09,47.209999084472656
2019-10-10,48.09000015258789
2019-10-11,49.15999984741211
2019-10-14,49.33000183105469
2019-10-15,49.61000061035156
2019-10-16,49.33000183105469
2019-10-17,49.77999877929688
2019-10-18,50.209999084472656
2019-10-21,50.95000076293945
2019-10-22,49.970001220703125
2019-10-23,50.68999862670898
2019-10-24,50.970001220703125
2019-10-25,51.470001220703125
2019-10-28,51.88999938964844
2019-10-29,52.619998931884766
2019-10-30,51.18999862670898
2019-10-31,50.7599983215332
2019-11-01,51.33000183105469
2019-11-04,52.290000915527344
2019-11-05,52.4900016784668
2019-11-06,52.060001373291016
2019-11-07,52.220001220703125
2019-11-08,51.81999969482422
2019-11-11,51.91999816894531
2019-11-12,51.2599983215332
2019-11-13,52.119998931884766
2019-11-14,52.40999984741211
2019-11-15,53.060001373291016
2019-11-18,53.4900016784668
2019-11-19,53.65999984741211
2019-11-20,52.77999877929688
2019-11-21,53.41999816894531
2019-11-22,54.0099983215332
2019-11-25,53.970001220703125
2019-11-26,53.93000030517578
2019-11-27,54.63999938964844
2019-11-29,53.63999938964844
2019-12-02,53.150001525878906
2019-12-03,52.86000061035156
2019-12-04,53.61000061035156
2019-12-05,54.25
2019-12-06,54.709999084472656
2019-12-09,54.86000061035156
2019-12-10,54.77999877929688
2019-12-11,55.40999984741211
2019-12-12,56.130001068115234
2019-12-13,55.77999877929688
2019-12-16,55.220001220703125
2019-12-17,55.27000045776367
2019-12-18,54.83000183105469
2019-12-19,55.34000015258789
2019-12-20,57.560001373291016
2019-12-23,58.5099983215332
2019-12-24,58.380001068115234
2019-12-26,59.11000061035156
2019-12-27,59.11000061035156
2019-12-30,58.59000015258789
2019-12-31,58.40999984741211
2020-01-02,58.83000183105469
2020-01-03,57.59999847412109
2020-01-06,56.79999923706055
2020-01-07,56.970001220703125
2020-01-08,57.56999969482422
2020-01-09,58.060001373291016
2020-01-10,57.959999084472656
2020-01-13,57.84000015258789
2020-01-14,57.900001525878906
2020-01-15,57.540000915527344
2020-01-16,58.58000183105469
2020-01-17,59.650001525878906
2020-01-21,57.95000076293945
2020-01-22,57.630001068115234
2020-01-23,58.220001220703125
2020-01-24,55.84000015258789
2020-01-27,54.15999984741211
2020-01-28,55.0
2020-01-29,56.02000045776367
2020-01-30,54.79999923706055
2020-01-31,53.84999847412109
2020-02-03,54.18999862670898
2020-02-04,54.75
2020-02-05,55.11000061035156
2020-02-06,55.09999847412109
2020-02-07,52.810001373291016
2020-02-10,51.0
2020-02-11,52.4900016784668
2020-02-12,54.209999084472656
2020-02-13,53.43000030517578
2020-02-14,52.459999084472656
2020-02-18,51.68999862670898
2020-02-19,52.02000045776367
2020-02-20,48.5099983215332
2020-02-21,46.970001220703125
2020-02-24,42.58000183105469
2020-02-25,39.310001373291016
2020-02-26,36.209999084472656
2020-02-27,34.7400016784668
2020-02-28,37.2599983215332
2020-03-02,35.59000015258789
2020-03-03,33.619998931884766
2020-03-04,33.0
2020-03-05,28.59000015258789
2020-03-06,27.100000381469727
2020-03-09,19.809999465942383
2020-03-10,20.5
2020-03-11,15.029999732971191
2020-03-12,9.649999618530272
2020-03-13,11.100000381469728
2020-03-16,10.9399995803833
2020-03-17,10.029999732971191
2020-03-18,7.769999980926514
2020-03-19,8.229999542236328
2020-03-20,8.720000267028809
2020-03-23,9.670000076293944
2020-03-24,13.75
2020-03-25,16.959999084472656
2020-03-26,15.710000038146973
2020-03-27,12.020000457763672
2020-03-30,10.68000030517578
2020-03-31,10.960000038146973
2020-04-01,9.550000190734863
2020-04-02,8.399999618530273
2020-04-03,8.460000038146973
2020-04-06,10.010000228881836
2020-04-07,11.010000228881836
2020-04-08,11.720000267028809
2020-04-09,13.109999656677246
2020-04-13,11.359999656677246
2020-04-14,12.350000381469728
2020-04-15,12.079999923706056
2020-04-16,11.350000381469728
2020-04-17,12.380000114440918
2020-04-20,11.489999771118164
2020-04-21,11.0
2020-04-22,10.869999885559082
2020-04-23,11.470000267028809
2020-04-24,10.859999656677246
2020-04-27,11.4399995803833
2020-04-28,13.09000015258789
2020-04-29,16.40999984741211
2020-04-30,16.399999618530273
2020-05-01,13.84000015258789
2020-05-04,14.4399995803833
2020-05-05,11.18000030517578
2020-05-06,11.119999885559082
2020-05-07,12.0
2020-05-08,12.43000030517578
2020-05-11,11.729999542236328
2020-05-12,11.09000015258789
2020-05-13,10.3100004196167
2020-05-14,10.760000228881836
2020-05-15,10.920000076293944
2020-05-18,12.880000114440918
2020-05-19,12.43000030517578
2020-05-20,12.779999732971191
2020-05-21,14.029999732971191
2020-05-22,13.899999618530272
2020-05-26,16.030000686645508
2020-05-27,17.59000015258789
2020-05-28,16.06999969482422
2020-05-29,15.65999984741211
2020-06-01,17.290000915527344
2020-06-02,17.389999389648438
2020-06-03,17.979999542236328
2020-06-04,19.59000015258789
2020-06-05,22.43000030517578
2020-06-08,26.86000061035156
2020-06-09,24.1299991607666
2020-06-10,20.649999618530277
2020-06-11,17.25
2020-06-12,20.5
2020-06-15,19.989999771118164
2020-06-16,20.959999084472656
2020-06-17,19.200000762939453
2020-06-18,19.309999465942383
2020-06-19,18.21999931335449
2020-06-22,17.09000015258789
2020-06-23,18.030000686645508
2020-06-24,15.800000190734863
2020-06-25,16.079999923706055
2020-06-26,15.279999732971191
2020-06-29,16.559999465942383
2020-06-30,16.43000030517578
2020-07-01,16.420000076293945
2020-07-02,15.970000267028809
2020-07-06,16.1299991607666
2020-07-07,15.270000457763672
2020-07-08,15.989999771118164
2020-07-09,15.199999809265137
2020-07-10,16.399999618530273
2020-07-13,15.600000381469728
2020-07-14,15.329999923706056
2020-07-15,18.5
2020-07-16,15.609999656677246
2020-07-17,15.270000457763672
2020-07-20,14.890000343322754
2020-07-21,14.979999542236328
2020-07-22,14.65999984741211
2020-07-23,14.40999984741211
2020-07-24,14.380000114440918
2020-07-27,13.380000114440918
2020-07-28,14.220000267028809
2020-07-29,14.34000015258789
2020-07-30,14.170000076293944
2020-07-31,13.640000343322754
2020-08-03,13.0600004196167
2020-08-04,13.5600004196167
2020-08-05,13.720000267028809
2020-08-06,14.239999771118164
2020-08-07,13.989999771118164

Indicator data:
date,10-day,60-day
2019-09-09,51.432000038840556,50.00626215700243
2019-09-10,52.13363605846058,50.147409641286714
2019-09-11,52.728181249445136,50.28604893918897
2019-09-12,53.18981732455167,50.41793413005892
2019-09-13,53.610544724897906,50.55797786191513
2019-09-16,53.7067266290838,50.65366639726149
2019-09-17,53.868544699928975,50.76925653759899
2019-09-18,53.95436318137429,50.88066641593891
2019-09-19,53.9685451854359,50.9868030506405
2019-09-20,53.9379995172674,51.088070757923234
2019-09-23,53.85018116344105,51.182311148721666
2019-09-24,53.67927232222124,51.26252429315953
2019-09-25,53.57127227783203,51.34925105402378
2019-09-26,53.115999325838956,51.36883024413729
2019-09-27,52.674544941295274,51.38189037927513
2019-09-30,52.435999644886365,51.420491496852186
2019-10-01,52.04236304543235,51.426076151113044
2019-10-02,51.412363017689096,51.37826739868831
2019-10-03,50.68672665682706,51.29855700633565
2019-10-04,50.11799926757813,51.22950779232171
2019-10-07,49.666181460293856,51.16503790349908
2019-10-08,49.0516357421875,51.05566627002153
2019-10-09,48.552362962202594,50.949349312704115
2019-10-10,48.323817651922056,50.87385752735242
2019-10-11,48.34745407104492,50.83416354695304
2019-10-14,48.43581813465465,50.80010897526976
2019-10-15,48.61945467862216,50.77483578249405
2019-10-16,48.77309140292081,50.739458803270686
2019-10-17,49.00509116432884,50.71835494744973
2019-10-18,49.285454628684306,50.71117459906906
2019-10-21,49.66818202625621,50.72746425065838
2019-10-22,49.82927315451882,50.71057905395174
2019-10-23,50.07036375565962,50.716824918236235
2019-10-24,50.29909120039506,50.73105447487753
2019-10-25,50.56636408025568,50.760841407150515
2019-10-28,50.868000238591975,50.802814070904844
2019-10-29,51.25581817626953,50.86629491712226
2019-10-30,51.32890881625089,50.87930034366462
2019-10-31,51.28999945900657,50.875874065961995
2019-11-01,51.33690892999822,50.88943151046669
2019-11-04,51.538000002774325,50.932972529677095
2019-11-05,51.751091211492366,50.981633791897465
2019-11-06,51.84018235640092,51.01474313162715
2019-11-07,51.933455241810194,51.05221312059079
2019-11-08,51.931273304332386,51.07475956150743
2019-11-11,51.940909298983485,51.09910376710319
2019-11-12,51.829999889026986,51.101021748944056
2019-11-13,51.90018151023171,51.131185652519186
2019-11-14,52.00618147416548,51.170234832346765
2019-11-15,52.20036350597035,51.229770401918174
2019-11-18,52.44127287431197,51.302005434296824
2019-11-19,52.69127280495383,51.37775406759293
2019-11-20,52.75999984741211,51.42236605368025
2019-11-21,52.93199955333363,51.48594523362123
2019-11-22,53.18945388793945,51.56676485655738
2019-11-25,53.3998178655451,51.644207526035
2019-11-26,53.56563616665927,51.718579126576905
2019-11-27,53.81199971979315,51.81439878536704
2019-11-29,53.83072690096768,51.875464346630324
2019-12-02,53.73799993341619,51.91973762929114
2019-12-03,53.59090916026722,51.95393984226581
2019-12-04,53.591636588356714,52.012775933937945
2019-12-05,53.70963661887429,52.09317484579451
2019-12-06,53.88454555164684,52.18884695084368
2019-12-09,54.06327292702415,52.28927866826292
2019-12-10,54.211999927867545,52.3869890140054
2019-12-11,54.46054534912109,52.5045682479775
2019-12-12,54.813091000643645,52.644961729206024
2019-12-13,55.07490893277255,52.77265021735853
2019-12-16,55.19600004716353,52.8808797700809
2019-12-17,55.28854557384144,52.98990164584801
2019-12-18,55.257273171164776,53.08353558733164
2019-12-19,55.29654589566317,53.192950893881545
2019-12-20,55.719637021151456,53.374038371101754
2019-12-23,56.26363664106889,53.58283066462949
2019-12-24,56.71763680197976,53.78326785811961
2019-12-26,57.238909565318714,54.00402744063914
2019-12-27,57.69290958751332,54.2202241803779
2019-12-30,57.99818226207386,54.413923636681396
2019-12-31,58.21963667436079,54.5960110607043
2020-01-02,58.45945510864258,54.7864209534692
2020-01-03,58.410909271240236,54.93089084521017
2020-01-06,58.16654545177113,55.043431800050165
2020-01-07,57.926545645973896,55.15630615317756
2020-01-08,57.80636374733665,55.284000127823624
2020-01-09,57.79236394708807,55.42316410293996
2020-01-10,57.76600008877841,55.554278822935345
2020-01-13,57.73872736150568,55.67689631102515
2020-01-14,57.745454892245206,55.796830784948796
2020-01-15,57.6992731961337,55.90052480020158
2020-01-16,57.85800073797053,56.03431174064595
2020-01-17,58.215819133411756,56.19901123880689
2020-01-21,58.227273698286574,56.30268338938228
2020-01-22,58.159637381813745,56.39189653240266
2020-01-23,58.187273823131214,56.496814598542095
2020-01-24,57.77036458795721,56.520011318185944
2020-01-27,57.08836441040039,56.48596759024865
2020-01-28,56.62818242853338,56.47862332036586
2020-01-29,56.405091441761364,56.502639720478996
2020-01-30,55.99436388882724,56.483781762461845
2020-01-31,55.46072713678534,56.431880065000776
2020-02-03,55.074908655340025,56.3902734558439
2020-02-04,54.89018138538707,56.366098587369656
2020-02-05,54.82909060391513,56.35225707299071
2020-02-06,54.811999442360616,56.3365083850798
2020-02-07,54.4352724942294,56.24388547595081
2020-02-10,53.78454527421431,56.09143191895198
2020-02-11,53.46218199296431,55.987972951586784
2020-02-12,53.49818184592507,55.940705154502325
2020-02-13,53.42527285489169,55.86688002080865
2020-02-14,53.200909077037466,55.76104938319472
2020-02-18,52.86181793212891,55.63053567188034
2020-02-19,52.62818166559393,55.51191819613097
2020-02-20,51.80599954778498,55.2786339827574
2020-02-21,50.82381799871271,54.997541121185805
2020-02-24,49.19127287431197,54.5763608463475
2020-02-25,47.15018220381303,54.05419148512877
2020-02-26,44.758000183105466,53.4383717750591
2020-02-27,42.39454595392401,52.784426467145074
2020-02-28,40.84327288540927,52.22343186758906
2020-03-02,39.28236382224343,51.616366291567275
2020-03-03,37.66999997225675,50.954147670308096
2020-03-04,36.27345449274237,50.282524713401585
2020-03-05,34.42090904929421,49.47792361942145
2020-03-06,32.65963634144176,48.6387432973893
2020-03-09,29.934181664206765,47.5757159509294
2020-03-10,27.74818167252974,46.55442086204154
2020-03-11,24.909636202725498,45.3728580047524
2020-03-12,21.477999791232023,44.03736071821119
2020-03-13,18.766181737726384,42.77461209010557
2020-03-16,16.500908955660734,41.53072682417156
2020-03-17,14.518363484469328,40.28122954186195
2020-03-18,12.553818043795498,38.98211478248972
2020-03-19,11.131636160070245,37.72407651156024
2020-03-20,10.168727146495472,36.509060123318534
2020-03-23,9.712727191231467,35.352398919016935
2020-03-24,10.182909029180353,34.356125690897954
2020-03-25,11.359454337033359,33.48988521998046
2020-03-26,12.27363619370894,32.605693961492655
2020-03-27,12.406727209958163,31.623950804257003
2020-03-30,12.279454560713335,30.623622942231393
2020-03-31,12.207818213376132,29.65878687556324
2020-04-01,11.862909160960804,28.673207643644407
2020-04-02,11.276545455239036,27.67574314654199
2020-04-03,10.698000006242232,26.706786860794317
2020-04-06,10.406000050631436,25.815486318817555
2020-04-07,10.289636455882679,24.98322949331315
2020-04-08,10.352181954817338,24.199907094663608
2020-04-09,10.762727321277966,23.48736063222416
2020-04-13,10.902363603765314,22.74191253146187
2020-04-14,11.234000032598322,22.054158444222207
2020-04-15,11.486181831359863,21.38281417883159
2020-04-16,11.585272806340997,20.713530038614742
2020-04-17,11.838909183848989,20.1034808625289
2020-04-20,11.858363671736283,19.48897812379514
2020-04-21,11.73363638791171,18.883945338713016
2020-04-22,11.567272723804821,18.299152987120582
2020-04-23,11.512545498934658,17.757688516866967
2020-04-24,11.35145452672785,17.220010911701806
2020-04-27,11.336727177013051,16.726027293543996
2020-04-28,11.620545387268066,16.309836043686165
2020-04-29,12.494545364379883,16.024770465965478
2020-04-30,13.287999846718527,15.760021819964132
2020-05-01,13.524181712757457,15.432295049604823
2020-05-04,13.842908928611061,15.146792304450697
2020-05-05,13.515272643349387,14.776622915789078
2020-05-06,13.173454458063299,14.42723493471823
2020-05-07,12.987090839039196,14.12849176620525
2020-05-08,12.869272734902122,13.865972652331076
2020-05-11,12.59563629843972,13.603333294196206
2020-05-12,12.200363610007546,13.342497235178296
2020-05-13,11.69963642467152,13.078693971217005
2020-05-14,11.39163646697998,12.852256820240958
2020-05-15,11.215272834084251,12.653612014113879
2020-05-18,11.448363754966042,12.539770486967159
2020-05-19,11.628000155362216,12.429803283618448
2020-05-20,11.848545542630282,12.347786882014875
2020-05-21,12.266181841763583,12.32125135562459
2020-05-22,12.623272670399059,12.302573748625042
2020-05-26,13.340909160267223,12.36512022148716
2020-05-27,14.264000077681107,12.490415309426563
2020-05-28,14.792545457319779,12.575710382357322
2020-05-29,15.141818150607023,12.65715300085766
2020-06-01,15.698363772305575,12.801513687248438
2020-06-02,16.157272737676447,12.955327875106061
2020-06-03,16.641454471241342,13.133792341732589
2020-06-04,17.317454511469062,13.366043713574852
2020-06-05,18.38600002635609,13.69190711219454
2020-06-08,20.10727285905318,14.158972706299663
2020-06-09,21.09654541015625,14.527125684029418
2020-06-10,21.305818072232334,14.774060098199897
2020-06-11,20.841272631558503,14.904213104091706
2020-06-12,20.94618173079057,15.136978131695523
2020-06-15,20.87036351290616,15.34606555615618
2020-06-16,20.92181791825728,15.580530007159124
2020-06-17,20.58836354342374,15.750601071217021
2020-06-18,20.25272709239613,15.919070999479032
2020-06-19,19.72399971701882,16.048764966745846
2020-06-22,19.066363421353426,16.140721256485403
2020-06-23,18.75727268565785,16.262743137443
2020-06-24,18.15363637750799,16.308366094912337
2020-06-25,17.689090919494628,16.360371557350366
2020-06-26,17.100363610007545,16.38334969119296
2020-06-29,16.839272620461205,16.445163882104424
2020-06-30,16.616909061778674,16.49825678913971
2020-07-01,16.47509089383212,16.546666628415466
2020-07-02,16.302000045776367,16.576819643427115
2020-07-06,16.218727163835005,16.609508141272705
2020-07-07,16.01709088412198,16.611590124870258
2020-07-08,15.97945447401567,16.636098315025286
2020-07-09,15.835272632945667,16.632174812379432
2020-07-10,15.920181673223322,16.666038189038552
2020-07-13,15.853818130493163,16.67131142694442
2020-07-14,15.732545401833274,16.665409786453665
2020-07-15,16.20999995144931,16.76183055294016
2020-07-16,16.124363535100763,16.759666608591548
2020-07-17,15.991636362942783,16.743836024029008
2020-07-20,15.802545530145819,16.71314204742348
2020-07-21,15.652363621104847,16.683530011724255
2020-07-22,15.449272693287243,16.641174816694416
2020-07-23,15.224909036809748,16.588863337365655
2020-07-24,15.009454519098455,16.534846948925914
2020-07-27,14.648909083279696,16.44915296471184
2020-07-28,14.481454589150168,16.39265024206026
2020-07-29,14.35600006797097,16.339874291550267
2020-07-30,14.275272802873092,16.281579212543093
2020-07-31,14.124363760514694,16.204273213454282
2020-08-03,13.897636552290482,16.10657377399382
2020-08-04,13.79509116086093,16.024688541954333
2020-08-05,13.747454816644842,15.947431720149973
2020-08-06,13.811454738270152,15.886136630324067
2020-08-07,13.83309102491899,15.814923507919728

Answer: 3.0