There is an association because the relative frequencies by column are different.
Step-by-step explanation:
For checking the association of a two-way table we have to calculate the relative frequency of the table. Here we see that there is an association between timing and day pf watching the movie. Also here relative frequencies of both columns are similar.
The two variables are time and day. The columns are similar because the two middle times are the most popular and the two outside times have less people. This shows a relationship
The set of ordered pairs can only be a function if the x value is not repeated .Thus,only C is a function as the x values (-1,4,1,-3) are unique while the other options have a repetition of its certain x values.
