<p>Blue Book, Test #5, Section 3, Question Number 8</p>
<p>0,0,0,1,1,1,1,1,1,2,2,3
median=1
sum of all siblings = 13
when another student is added it makes 13 students
13/x=1 (same as median)
x=13
therefore the new student did not have any siblings</p>
<p>^ sweatpants, did you mean
x/13=1?</p>
<p>sweatpants' solution in more (many more :))words:</p>
<p>Students' Siblings distribution
0,0,0,1,1,1,1,1,1,2,2,3;
total Number of Siblings = 13,
median = 1.</p>
<p>After bringing in a new student
new Number of Students = 12 + 1 = 13,
average Number of Siblings per Student =
(new Number of Siblings) / 13 = 1 (median is still 1),
new Number of Siblings = 13;
since old number = 13, no siblings added.
Enough of siblings already! :D</p>
<p>thanx that was helpful :)</p>