Name: _________________________________________
Period: _____________
9.3
- Two Way Tables
1) The two-way table shows the results of a football team’s home games
over the last five seasons and whether the stadium roof was open or
Stadium Roof
closed.
Open
Closed
a) How many home games did the team win?
Win
25
7
32 games
Loss
8
0
b) How many home games did the team lose with a closed roof?
0 games
c) Find and interpret the marginal frequencies (totals).
32 home games were won
________________________________________________________________________________
8 home games were lost
________________________________________________________________________________
33 home games were played with an open roof
________________________________________________________________________________
7 home games were played with a closed roof.
________________________________________________________________________________
________________________________________________________________________________
d) What percent of the total home games did the team win with an
open roof?
25 wins with an open roof
=.625 = 62.5%
40 total games at home
2) You randomly survey students in a school about whether they prefer cats
or dogs as pets. The results are shown in the tally sheets. Complete the
Pet Preference
two-way table including the totals of the rows and columns.
Total
Dogs
Cats
8
25
17
Male
14
20
34
Female
59
28
31
Total