Probability
Conditional Probability
from Tables
Conditional Probability from
Tables
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
A form of experimental probability where the
data from a particular scenario is presented in
a table.
To determine the probability of an event from
that scenario read the table and place the
information from the event into the fraction;
probability = selected data / selected total
Example: Conditional Probability
from a Table
The following table
Shows the faculty
status (level of
professorship)
at a state
university.
Status
Male
Female
Totals
Assistant
254
151
405
Associate
397
154
551
Full
642
99
741
Totals
1293
404
1697
What is the probability of randomly selecting a female
faculty member?
Answer = 404/1697
Examples: Conditional Probability
from a Table (Continued)
Status
Male
Female
Totals
Assistant
254
151
405
Associate
397
154
551
Full
642
99
741
Totals
1293
404
1697
What is the probability of randomly selecting a male assistant faculty
member from the assistant professor faculty?
Answer = 254/405
What is the probability of randomly selecting a female full professor
from the female faculty?
Answer = 99/404
Examples: Conditional Probability
from a Table (Continued)
Status
Male
Female
Totals
Assistant
254
151
405
Associate
397
154
551
Full
642
99
741
Totals
1293
404
1697
What is the probability of randomly selecting a male assistant faculty
member OR a female full professor from the faculty?
Answer = (254+99)/1697 = 353/1697
What is the probability of randomly selecting a male full professor from
the female faculty?
Answer = 0/404 = 0
Assignment

Worksheet