Unidad 3

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Unidad 3: Muestreo, Medidas de 
tendencia central y de dispersión 
 
Tabla de contenido 
 ......................................................................... 3 
 ................................................................................. 3 
 .................................................................................. 4 
 .......................................... 5 
 ............................................................................................... 5 
 ....................................... 6 
 ................................ 10 
 .................... 16 
 ............................................................................................. 16 
 ............................. 16 
 ................................ 20 
 .............................................................................. 25 
 ...... 26 
 ............. 27 
 .................................................. 31 
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 ...................................................................................... 32 
 .................................................................................... 33 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
𝑝
𝑞
𝑞 = 1 − 𝑝
𝑝
𝑞
𝑝 = 0.5 𝑞 = 1 −
0.5 = 0.5
𝑛
𝑍
𝑝
𝑞
𝐸
 
𝑝 = 𝑞 = 0.5
𝑃(𝑍) =
0.95 𝑍 = 1.96
𝑛
𝑍
𝑝
𝑞
𝑁
𝐸
 
 
 
 
𝑝 = 𝑞 = 0.5
𝑝(𝑍) =
0.95 𝑍 = 1.96
 𝑁 𝑁
 
 
 
 
 
 
 
 
 
 
 
 
 
�̅� μ
𝑁 𝑛
 
 
𝑛
𝑛
 
 
 
 
 
 
 
𝑥𝑖 𝑓𝑖
𝑥𝑖 𝑓𝑖
 
 
 
 
 
𝑁
2
 
𝐿𝑖
𝐹𝑖−1
𝑓𝑖
𝑎𝑖
𝑁
2
=
40
2
= 20
1 
2 
3 
4 
5 
6 
 
𝐿𝑖
2 3 
4 
5 
 
𝑓𝑖
𝑓𝑖+1
𝑓𝑖−1
𝑎𝑖
 
(𝑓𝑖 − 𝑓𝑖−1) = 12 − 7 = 5
(𝑓𝑖 − 𝑓𝑖+1) = 12 − 8 = 4
1 
2 
3 
4 
5 
1 2 
 
 
 
 
 
 
 

 
 
 
 
 
https://www.youtube.com/watch?v=CJRtMPF7gdQ
https://www.youtube.com/watch?v=OHkcBcbKfuY
 
 
 
 
http://www.freedigitalphotos.net/images/Charts_and_Graphs_g197-Light_Arrow_Graph_p35824.html
 
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