The results of a recycling
survey are shown in the two-way table.
Find and interpret the marginal
frequencies. (Section 9.3)
sho
int
Recycle
Yes No
Female
28
9
Gender
Counti
Male
24
14

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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