Question

here is a relative frequency table.
which value would best fit in the missing cell to suggest there is no evidence of an association between the variables?

	digital watch	analog watch
no date display	18

a 9
b 18
c 27
d 54

Explanation:

Step1: Find ratio of digital to analog (date display)

$\frac{\text{digital (date)}}{\text{analog (date)}} = \frac{54}{27} = 2$

Step2: Apply ratio to no date display

Missing value = $\frac{\text{digital (no date)}}{2} = \frac{18}{2} = 9$

Answer:

A. 9