Estadistica

ACTIVIDAD 1: MEDIDAS DE TENDENCIA CENTRAL- MODA

Datos:810,810,815,815,816,830,830,830,831,833,833,835,835,835,836,836,837,837,839,840,840,840,840,844,844,844,849,849,853,853,856,856,858,858,860,869,873,873,881,881,883,884,888,888,888,888,889,889.

Ni | Li | Ls |fi |
810-830 | 810 | 830 | 8 |
831-851 | 831 | 851 | 20 |
852-872 | 852 | 872 | 8 |
873-893 | 873 | 893 | 12 |

Mo=Li+ fi-fi-1fi-fi-1+fi-fi+1*ai

Mo=831+ 20- 820-8+20-8*20

Mo=831+ 1224*20

Mo=831+ 10

Mo=841

ACTIVIDAD 1: MEDIDAS DE TENDENCIA CENTRAL-MEDIA

Datos:810,810,815,815,816,830,830,830,831,833,833,835,835,835,836,836,837,837,839,840,840,840,840,844,844,844,849,849,853,853,856,856,858,858,860,869,873,873,881,881,883,884,888,888,888,888,889,889.

Por datos no agrupados:
x= μ= i=1NxiNx=810*2+815*2+816*1+830*3+831*1+833*2+835*3+836*2+837*2+839*1+840*3+844*3+849*2+853*2+856*2+858*2+860*1+869*1+ 873*2+881*2+883*1+884*2+888*4+(889*2)48x=1620+1630+816+2490+831+1666+2505+1672+1674+839+2520+2532+1698+1706+1712+1716+860+869+1746+1762+883+1768+3552+177848

x=4084548x=850.93

Por datos agrupados:

Ni | Li | Ls | fi | Fi | Mc |
810-830 | 810 | 830 | 8 | 8 | 820 |
831-851 | 831 | 851 | 20 | 28 |841 |
852-872 | 852 | 872 | 8 | 36 | 862 |
873-893 | 873 | 893 | 12 | 48 | 883 |

x= μ= i=1nMcfin

x=820*8+841*20+862*8+883*1248