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Chapter 8: Discrete Probability Distributions
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Figure 8-2:
Display of the Relationship between the
Sample Space and the values of X, the
number of girls in a two-child family
By observing
Figure 8-1
and
Figure 8-2
, you will see that the points in the
sample space are associated with values on the number line through
X
. Also
observe that these numbers are based on the random outcome of the
experiment. Because of this, we refer to the variable
X
as a
random
variable.