Question

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Answer 1

Respuesta:

Explicación paso a paso:

1. MEDIA =9450/60 = 157.5

2. Mediana  $M_{d}$

 $M_{d} = L_{i} +[\frac{\frac{n}{2} -F_{i-1} }{f_{i} } ].A$

$L_{i}$  límite inferior del intervalo mediano.

A = 19

$L_{i} = 140$

reemplaza

$M_{d} = 140+[\frac{\frac{30}{2} -13 }{18 } ].19$

$M_{d}$ = 142.113

3. Moda $M_{o}$

$M_{o} = L_{i} + [\frac{d_{1} }{d_{1}+d_{2} } ].A$

$d_{1} = f_{i} - f_{i-1}$ = 21-18 = 3

$d_{2} = f_{i} - f_{i+1}$ = 21-4 = 17

$M_{0} = 160 + [\frac{3 }{20} ].19$

$M_{0}$ = 162.85 = 163