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PC2-Estadística-Quiroz.EEGGLL

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Formulario de Estadística descriptiva y bidimensional para la PC2

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Course

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Formulario Estadística PC2 10 Valores atípicos : Valor < Q1-1 5 .
Q3-Q1)
4) Ancho de clase A =
R
K: número de intervalos P25 = Q 1 * Valor - 23 + 1 5
.
/Q3- Q1
K
Pso = Q2

Xmáx-Xmin Q3
Rango R
P75
= =




11) Varianza para datos Exi-nep
3 Regla de la raiz cuadrada : K = n no agrupados -


n -
1
4
Regla de Sturges 17 = 1 +3 .

Blog (n)
12) Narianza
para datos agrupados / intervalos

5) Media para datos no
agrupados
* = 2xi 5 = Xifi -n(x)
n
n -
1


E Media
para datos agrupados en intervalos K intervalos 13) Coeficiente de variación si me piden variabilidad

* Xifi *i de clase CV S relativa usar cv
= : marca =
X 100 % ,

2
1XI
X'i : li + li + 1) 2
7 Mediana datos agrupados en intervalos 14) Desviación Estándar
para
Po = R S =
Varianza
2
Me
li Se 92
=




15) Puntaje Estandarizado
8 Mediana para datos no agrupados Sirre
para medir la ubicación relativa de individuo

↓ Reordenar datos de menor a mayor Bsujeto e
objeto) respecto a su .
grupo
al Si valor de una variable
n es
impar -J promedio
Po n+ 1 valor de -i Xi X
=
Me posición = -
=



2
en Po So desviación estándar
D Si Si : Zic-1 individuo : por debajo del promedio
n es
par
-
& Zi =1 = dentro de promedio
Po Po Po Pot1
n
=
=
+

2
zis-- individuo por encima de promedio
al ésimo percentil CPml 16) coeficiente de asimetría
me
para datos agrupados
-




en intervalos Po = mn

108
A = 3 X -
Me

Pm = li + cj mn
Fi
S
- - 1

Fi 100
As0 :
asimetría la derecha
a
positiva
cj = li + 1 - li A = 0
: no
hay asimetría .




A1 : Asimetría a la izquierda negativa
intervalo j-ésimo contiene a Pm Si :



Fjr mn

100
variable
dependiente :
y
variable
independiente : X

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Uploaded on
May 5, 2024
Number of pages
3
Written in
2023/2024
Type
Class notes
Professor(s)
Zaida quiroz
Contains
Pc2

Subjects

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