tarea estadistica 2015

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70 ejercicios de estadistica resueltos

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Hoja1

42|d|

XdX |D|= X -

2.50.82DM=d /N1000000206000DM=|d| /N2.50.8211000001060003.10.22DM=4.34/61350000144000DM=624000/53.00.321275000690003.40.08DM=0.72130500099000DM=124800.005.42.08603000062400019.94.34

N=6N=5

19.9/6 =3.326030000/53.32

3.321206000

5.15.2

X|d|X|d|

917.93DM=d /N4031.56DM=d /N1016.934526.561214.93DM=178.86/145813.56DM=199/161511.936011.56179.93DM=12.78656.56DM=12.44188.93674.56206.93683.56251.93701.56281.07720.44358.07720.444013.07764.444619.078513.445023.078917.445225.078917.44377178.869321.44N=149624.44377/14 =26.931145199.00N=1626.931145/16 =26.93

71.5625

5.35.4

X|d|X|d|

40093.55DM=d /N3000433.17DM=d /N45043.553200233.1745637.55DM=178.86/143300133.17DM=178.86/1446627.55333796.1747023.55DM=46.69339043.17DM=156.4747617.55345016.8348013.5546.694214876345016.83156.4754551.45345622.8355056.45350066.8356672.45350066.8357076.453565131.835429513.644050616.83N=11411981877.675429/16 =493.5N=1241198/12 =493.5493.54545454553433.17

5.3

X|d|

2432.28DM=d /N2828.283422.28DM=269/183620.284412.28DM=14.94488.28506.2814.9444444444524.28560.28603.72647.72669.727013.727215.727215.727417.728023.728326.721013269N=181013/1856.3

56.2777777778

Hoja2

xffx|d|f|d|6016017.866666666717.87DM=66426411.866666666747.477053507.866666666739.33DM=231.73/307664561.866666666711.208164863.133333333318.80DM=2.9890872012.133333333397.0744330233654.7333333333231.73N=3077.8666666667

xffx|d|f|d|144561.81081081087.2432432432DM=1591350.81081081087.297297297316152400.18918918922.8378378378DM=29.08/371781361.18918918929.5135135135181182.18918918922.1891891892DM=1.8480375856.189189189229.08N=3715.8108108108

xffx|d|f|d|5821167.379310344814.7586206897DM=5942366.379310344825.51724137936031805.379310344816.1379310345DM=115.86/296542600.37931034481.51724137936853402.620689655213.1034482759DM=4.006964143.620689655221.7241379317053504.620689655223.103448275944929189630.3793103448115.8620689655N=2965.3793103448

xffx|d|f|d|6531957.2021.59DM=6642646.2024.786721345.2010.39DM=189.37/516842724.2016.786932073.209.59DM=3.717021402.204.397153551.205.987264320.201.187342920.803.227432221.805.417521502.805.617621523.807.617732314.8014.41781785.805.807921586.8013.618054007.8039.02116051368264.00189.37N=5172.20

Hoja3

XXsFFXs|d|f|d|105001149910999.5110999.51714.291714.29115001249911999.5223999714.291428.57125001349912999.5225999285.71571.43135001449913999.52279991285.712571.4349998788996.54000.006285.71N=712713.79DM=

DM=6285.71/7

DM=897.96

XXsFFXs|d|f|d|606964.5212919.7139.43707974.564479.7158.29808984.51815210.295.14909994.59850.510.2992.57318352947.540195.43N=3584.21DM=

DM=195.43/35

DM=5.58

XXsFFXs|d|f|d|1.521.591.561523.3250.081.151.61.671.641829.430.000.061.681.751.721322.2950.081.094.914675.050.162.30N=461.63DM=

DM=195.43/35

DM=0.05

Hoja4

XX22439141.3624.944.9974986486498110100121441214412144141961625618324204001511979

151/14 = 10.79

x10.792 =116.42

XX2394166368641010012144152251625674850

74/8 = 9.25

x9.252 =85.56

MATEMATICAHISTORIAXX2XX216256391521183244217642949.276.248.73319614621164016004924015227045429163511638.0425.266440965833646846246036007556256036007860846137219488366744895363511053629492

536/10 = 53.60536/10 = 53.60

x53.602 =2872.96x53.602 =2872.96

XX2XX2981401600101004520251214458336415225603600172896542251832467448920400684624256257049002878472518435122572518440160076577646211685722550250089792152270489792137713117938649969216114585903377/14 = 26.93

x26.932 =725.221145/16 = 71.56

x71.562 =5120.83

XX2XX240016000030009000000450202500320010240000456207936330010890000466217156333711135569470220900339011492100476226576345011902500480230400345011902500545297025345611943936550302500350012250000566320356350012250000570324900356512709225542927102494050164025004119814211833011843194.166666756537.92237.785429/11 = 493.5541198/12 = 3433.17x493.552 =243591.60x3433.172 =11786656.25

XX224576287843411563612964419364823045025005227045631366036006440966643567049007251847251847454768064008368891013624773470.9444444444303.5117.42

1013/18 = 56.28

x56.282 =3167.44

Hoja5

Demuestre que la media y la desviacion tipica de la distribucion siguiente es de x 4.7 y s3.52

xfX2fxfX2020002244831939613663683642419210110010100291021347345N=104.7022.09

hallar la desviacion estandar de las pruebas obtenidas en un examen final de artes plasticas por 73 alumnos de primero basicoxfX2fxfX23193941164165225105065363018072149147102981464112896914811261134101510015015005273380582481465.94520547952.381.54N=737.9763.56

hallar la desviacion estandar de las pruebas obtenidasde 35 alumnos en un test de habilidad matematica

xfX2fxfX2988172648866448384754935245610366036053251575411641631939214244435284239174149.74285714293.111.76N=356.8346.63

calcule la desviacion media y la desviacion estandar de los precios de 34 botellas de aceite comestible

xfX2fxfX2|d|f|d|6.75645.5640.50273.381.318757.91257.20351.8421.60155.520.868752.606257.80860.8462.40486.720.268752.158.00464.0032.00256.000.068750.2758.25968.0674.25612.560.181251.631259.00681.0054.00486.000.931255.58759.50490.2538.00361.001.431255.72556.5040461.56322.752631.185.0725.8965.780.670.82N=408.0765.10DM=

DM=25.89/40

DM=0.65

Hoja6

Los punteos obtenidos por 49 alumnos en una prueba objetiva de calculo mercantil y matematica financiera

XfXSXS2fXsfXS26069264.504160.2566.508320.5070791574.505550.2589.5083253.7580891984.507140.25103.50135664.7590991394.508930.25107.50116093.254931825781367.00343332.25N=497.4956.10

Las puntuaciones obtenidas por 30 alumnos en un test de hbitos de estudio

XfXSXS2fXsfXS24549147.002209.0048.002209.005054152.002704.0053.002704.005559157.003249.0058.003249.006064362.003844.0065.0011532.006569267.004489.0069.008978.007074572.005184.0077.0025920.007579577.005929.0082.0029645.008084482.006724.0086.0026896.008589587.007569.0092.0037845.009094392.008464.0095.0025392.003069550365725174370N=3024.17584.03

7006.7806122449fXSXS2fXsfXS2564.54160.25322.520801.25674.55550.2544733301.51484.57140.25118399963.5894.58930.25756714421104.510920.25104.510920.251114.513110.25114.513110.253549811.52927.5249538.75N=3583.6483.64285714296996.137129.6785714286133.5511.56