Respuesta:
Explicación paso paso:
a )
_______________________________________
[tex]x_{i}[/tex] [tex]f_{i}[/tex] [tex]x_{i} *f_{i}[/tex]
____________________________________________________
[tex]14[/tex] [tex]3[/tex] [tex]42[/tex]
[tex]15[/tex] [tex]4[/tex] [tex]60[/tex]
[tex]16[/tex] [tex]3[/tex] [tex]48[/tex]
[tex]17[/tex] [tex]6[/tex] [tex]102[/tex]
_____________________________________________________
[tex]18[/tex] [tex]2[/tex] [tex]36[/tex]
[tex]Total[/tex] [tex]n=18[/tex] [tex]288[/tex]
b )
[tex]18 amigos[/tex].
[tex]c )[/tex]
[tex]Media: X = ?[/tex]
[tex]X =[/tex] ∑ [tex]x_{i} * fx_{i}[/tex] / n
[tex]X = \frac{288}{18}[/tex]
[tex]X = 16[/tex]
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Verified answer
Respuesta:
Explicación paso paso:
a )
_______________________________________
[tex]x_{i}[/tex] [tex]f_{i}[/tex] [tex]x_{i} *f_{i}[/tex]
____________________________________________________
[tex]14[/tex] [tex]3[/tex] [tex]42[/tex]
____________________________________________________
[tex]15[/tex] [tex]4[/tex] [tex]60[/tex]
____________________________________________________
[tex]16[/tex] [tex]3[/tex] [tex]48[/tex]
____________________________________________________
[tex]17[/tex] [tex]6[/tex] [tex]102[/tex]
_____________________________________________________
[tex]18[/tex] [tex]2[/tex] [tex]36[/tex]
_____________________________________________________
[tex]Total[/tex] [tex]n=18[/tex] [tex]288[/tex]
b )
[tex]18 amigos[/tex].
[tex]c )[/tex]
[tex]Media: X = ?[/tex]
[tex]X =[/tex] ∑ [tex]x_{i} * fx_{i}[/tex] / n
[tex]X = \frac{288}{18}[/tex]
[tex]X = 16[/tex]