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ESTADÍSTICA DESCRIPTIVA
Empresariales. Febrero 1999
1. Sean las siguientes dos distribuciones de salario:
EMPRESA A | | EMPRESA B |
Salarios | Nº de trabajadores | | Salarios | Nº de trabajadores |
70 - 90 | 10 | | 70 - 80 | 20 |
90 - 120 | 12 | | 80 - 120 | 20 |
120 - 130 | 25 | | 120 - 200 | 40 |
130 - 200 | 20 | | 200 - 500 | 5 |
200 - 500 | 8 | | | |
a) Determinar los salarios medios, mediano y modal de la empresa A.
b) ¿Cuál de los dos salarios medios es más representativo?
c) ¿En cuál de las dos empresas está más concentrado el reparto de la masa salarial?
d) ¿Qué porcentaje de la masa salarial total gana el 32 % de los trabajadores pero pagados de la empresa B?
2. A partir de la siguiente información
X | 2 | 1 | 4 | 3 | 5 | 6 |
Y | 8 | 7 | 5 | 9 | 4 | 6 |
ajuste el modelo de regresión y = a xb.
3. Los productos que se consumen en un determinado país están agrupados en 3 grupos. A partir de la siguiente información:
Grupos | Ponderaciones | I9297 | I9298 |
1º | 250 | 114 | 118 |
2º | 250 | 127 | 129 |
3º | 500 | 129 | 132 |
determine:
a) La inflación en el año 1998.
b) La participación del grupo 3 en la variación del índice general.
c) Si a un trabajador le subieron su salario nominal un 10 % en 1998, ¿cuál fue la tasa de variación real del mismo?
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Enviado por: | Benito Prieto |
Idioma: | castellano |
País: | España |