7/31/2019 EB_U3_MD_ARCR

1/4

Estadstica Bsica Unidad 3

Anbal Cervera Rodriguez

7/31/2019 EB_U3_MD_ARCR

2/4

Actividad 4: Medidas de tendencia central. Recorrido

Variable fi Fi hi Hi

810 2 2 0.04167 0.04167815 2 4 0.04167 0.08333

816 1 5 0.02083 0.10417

830 3 8 0.06250 0.16667

831 1 9 0.02083 0.18750

833 2 11 0.04167 0.22917

835 3 14 0.06250 0.29167

836 2 16 0.04167 0.33333

837 2 18 0.04167 0.37500

839 1 19 0.02083 0.39583

840 3 22 0.06250 0.45833844 3 25 0.06250 0.52083

849 2 27 0.04167 0.56250

853 2 29 0.04167 0.60417

856 2 31 0.04167 0.64583

858 2 33 0.04167 0.68750

860 1 34 0.02083 0.70833

869 1 35 0.02083 0.72917

873 2 37 0.04167 0.77083

881 2 39 0.04167 0.81250

883 1 40 0.02083 0.83333884 2 42 0.04167 0.87500

888 4 46 0.08333 0.95833

889 2 48 0.04167 1.00000

48

La frmula para calcularlo es:

Donde:mx x

ies el valor mximo de la variable

min xi es el valor mnimo de la variable

Sustituyendo los datos

Re= 889 810 = 79

Re = 79

7/31/2019 EB_U3_MD_ARCR

3/4

Actividad 5 VARIANZA

2=48i=1 (xi- )2/48

2= (810-850.937)2+ (810-850.937)2 +(815-850.937)2 +(815-850.937)2 +(816-850.937)2 +(830-850.937)2 +(830-850.937)2 +(830-850.937)2 +(831-850.937)2

+(833-850.937)2 +(833-850.937)2 +(835-850.937)2 +(835-850.937)2 +(835-

850.937)2 +(836-850.937)2 +(836-850.937)2 +(837-850.937)2 +(837-850.937)2

+(839-850.937)2 +(840-850.937)2 +(840-850.937)2 +(840-850.937)2 +(844-

850.937)2 +(844-850.937)2 +(844-850.937)2 +(849-850.937)2 +(849-850.937)2

+(853-850.937)2 +(853-850.937)2 +(856-850.937)2 +(856-850.937)2 +(858-

850.937)2 +(858-850.937)2 +(860-850.937)2 +(869-850.937)2 +(873-850.937)2

+(873-850.937)2 +(881-850.937)2 +(881-850.937)2 +(883-850.937)2 +(884-

850.937)2 +(884-850.937)2 +(888-850.937)2 +(888-850.937)2 +(888-850.937)2

+(888-850.937)2 +(889-850.937)2 +(889-850.937)2 /48=

2= 1,675.837 + 1,675.837 + 1,291.467 + 1,291.467 + 1,220.593 + 438.357 +438.357 + 438.357 + 397.483 + 321.735 + 253.987 + 253.987 + 253.987 +

223.113 + 223.113 + 194.239 + 194. 239 + 142.491 + 119.617 + 119.617 +

119.617 + 48.121 + 48.121 + 48.121 + 48.121 + 3.751 + 3.751 + 4.255 + 4.255 +

25.633 + 25.633 + 49.855 + 49.855 + 82.137 + 326.271 + 486.77 + 486.77 +

903.78 + 903.78 + 1,028.03 + 1,093.16 + 1,093.16 + 1,373.665 + 1,373.665 +

1,373.665 + 1,373.665 + 1,448.791 + 1448.791 / 48

2=25151.602 / 48

2= 523.991

Actividad 6 Desviacin tpica

= 2 = Ni=1 (xi- )2/N

= = 2 = 523.991

=22.908

MEDIA MEDIANA MODA RECORRIDO VARIANZADESVIACION

TIPICA

850.937 842.77 888 79 523.991 22.908

7/31/2019 EB_U3_MD_ARCR

4/4

NOTA: me tarde en realizarlo porque por mas que le busque me daban resultados

diferentes aun siendo los mismos datos.