Posted by diane on Saturday, March 1, 2008 at 10:41am.
Find the fivenumber summary of the following set of numbers.
335, 233, 185, 392, 235, 518, 281, 208, 318

math  Ms. Sue, Saturday, March 1, 2008 at 10:50am
First, arrange the set of numbers in order, with the lowest first.
185, 208, 233, 235, 281, 318, 335, 392, 518
Then, follow the instructions in this website.
http://illuminations.nctm.org/Lessons/States/FiveNumSum.htm
We'll be glad to check your answers. 
math  drwls, Saturday, March 1, 2008 at 10:54am
Here is a definition of Fivenumber summary:
(1) the minimum (smallest observation)
(2) the lower quartile or first quartile (which cuts off the lowest 25% of the data)
(3) the median (middle value)
the upper quartile or third quartile (4) (which cuts off the highest 25% of the data)
(5) the maximum (largest observation)
In your case the median is 281 , the minimum is 185 and the maximum is 518. For the two quartiles, take the third and seventh largest numbers of the group. 
math  Carrie, Saturday, March 1, 2008 at 6:14pm
293.55