<p>Can someone explain this question?
And can you guys give me more questions like these so i can practice.</p>
<p>Okay, so this is how you do it. You get the total number of siblings first. The table shows that 3 students have 0 siblings; 6 students have 1 sibling; 2 students have 2 siblings; and 3 students have 1 sibling. So that means that there are 0+0+0+1+1+1+1+1+1+2+2+3 numbers of siblings, which comes out to be 13 siblings for the 12 students in the class. I wrote that long sum out because the problem next states that a new student comes and the NEW average is the median of the OLD number of siblings per student. The median of that long list of numbers I wrote is 1. So, after the student joins, the average # of siblings per student is equal to (# of siblings/# of students) which equals 1. So now there are 13 students and there used to be 13 siblings. To find how many siblings the new student brought you can set up this equation: (13+x)/(13) = 1 with x being the number of siblings the new student brings, 13 in the denominator being the new number of students, and 13 in the numerator being the old number of siblings. But x should equal zero since the equation equals 1, so the student brought no new siblings to the class. The answer is A. Sorry it was so long! I tend to write more than I need to :l</p>
<p>Thanks!
Doesn’t matter, at least now i know how to solve this question
Got anymore questions, like this one, for me to solve</p>