Media
:
?
=
E
(
X
)
=
?
i
____________________
____________________
propiedades
de
la
media
:
?
E
(
a
+
bX
)
=
____________________
+
____________________
(
____________________
)
,
con
____________________
,
____________________
?
____________________
?
E
[
____________________
(
____________________
)
]
=
?
____________________
(
____________________
)
____________________
?
E
(
X
+
Y
)
=
____________________
(
____________________
)
+
____________________
(
____________________
)
?
E
(
X
?
Y
)
=
____________________
(
____________________
)
?
____________________
(
____________________
)
