Pg 539 (471) - Q7
If we assign the variable x to Column 1, Row 1, and y to Column 1,
Row 2, then the chart would look like this:
Column 1
Column 2 Total
Row 1 x
53 – x
53
Row 2 y
26 - y
26
Row 3 36 – x – y 21 – (36 – x – y) 21
Total 36
64
100
As can be seen, if you know x and y, everything else can be
figured out in terms of x and y using the totals. Therefore, the
least number of entries needed to fill out the table is 2, or B.