Question

Nicole is studying a two-way table. She has computed the relative frequencies by column for each cell. What characteristic of the data will imply an association between the two variables?
The relative frequencies are nearly the same in each row.
The relative frequencies are significantly different each row.
The relative frequencies add to 100% for each column.
The relative frequencies add to 100% for each row.

Answer 1

b?

Answer 2

@mathmate stats please help

Answer 3

@zepdrix stats ?

Answer 4

I do not see a reasonable answer for this one.

If there is correlation, then relative frequencies are significantly different in each row (or column).
BUT...
If they are significantly different in each row, it does NOT necessarily imply correlation or association.
Significant difference in each row is a necessary condition but not sufficient, while the choice
"The relative frequencies are significantly different each row."
seems to imply that it is sufficient to indicate association/correlation.