Question

The table below shows the number of students in a school who like tacos and/or pizza:


Like Tacos Do Not Like Tacos Total
Like Pizza 57 13 70
Do Not Like Pizza 12 15 27
Total 69 28 97

What is the relative frequency, by row, of students who like both tacos and pizza?
0.18
0.46
0.81
0.83

Answer 1

                           like tacos........no tacos.....total
like pizza               57                    13            70
no pizza                12                    15            27
----------------------------------------------------------------
total                       69                    28            97

relative frequency who both like tacos and pizzas = 57/70 = 0.81

Answer 2

Answer:

Relative frequency, by row, of students who like both tacos and pizza is:

0.81

Step-by-step explanation:

                                  Like Tacos Do Not Like Tacos      Total

Like Pizza                    57                 13                       70

Do Not Like Pizza            12                  15                       27

Total                            69          28                       97

The relative frequency by row is calculated as the ratio of the frequency of the required field to the total frequency of that row

Hence, relative frequency, by row, of students who like both tacos and pizza is:

57/70

=0.81