Posted by Anonymous on Friday, January 23, 2009 at 3:55pm.
find the first and third quartiles, Q1, and Q3, of the following numbers, 13,5,12,16,7,14,7,3,10,7

math  Saira, Friday, January 23, 2009 at 4:21pm
The first Q1 would be ( 1+n)4 = which is the 25 % of the data set
and the Q3 would be n(3)/4 = the 75 % of the data :
So for Q1 its :
n= 10
(1+11)/4 = 3
The 3 is not the q1, this just tells where at what position the number is so the thirds number in the data set is 12, so therefore Q1= 12

math  Saira, Friday, January 23, 2009 at 4:29pm
corrections first put the numbers is order:
And Q3 is (n+1)3/4
3,5,7,7,7,10,12,13,14,16,
SO Q1= 7
and Q3= 12(3)/4 = 9
So the 9th number is 14 therefore Q3= 14

math  Anonymous, Friday, January 23, 2009 at 11:55pm
I am still not understanding how you came up with the answer, can you explain how to do it Thanks
Answer This Question
Related Questions
 Math  Find the first and third quartiles, Q1 and Q3, of the following set of ...
 math  find the first and third quartiles,Q1and Q3,of the following set of ...
 math  Find the first and third quartiles, Q1 and Q3, of the following set of ...
 Math  Find the first and third quartiles, Q1 and Q3, of the following set of ...
 Math  Find the first and third quartiles of the following set of numbers. 13,4,...
 math  Find the first and third quartiles, Q1 and Q3, of the following set of ...
 MAth  iFind the first and third quartiles, Q1 and Q3, of the following set of ...
 basic math  how do you find the first and third quartiles of a set of numbers
 MathHelp Please  Can someone help me figure this out? 1. Find the first and ...
 math  Please help me to find the first and third quartiles, Q1 and Q3, of the ...
More Related Questions