I'm studying for a math test, and I am having a lot of trouble trying to determine how to find the interquartile range within a group of numbers. I tried reading the explanation in the text book, but books have a way of making me even more confused. Could anyone help me?
2007-03-11 09:48:14 · 2 answers · asked by Hmmm... 3 in Science & Mathematics ➔ Mathematics
This is a babyish way of doing this but it definetly works. You start by finding the middle value, or median. To do this, write out each number, in order, from the lowest to highest. Work out how many values u have then count along half that value, if this number has a .5 in it then u will get to two numbers, the median lies exactly between the two whole values either side of where this point would be. Then calculate the median of the top and bottom half of the data, these r your upper and lower quartiles. Then, work out the difference between these two values by taking the greater from the smaller. Now u have the interquartile range.
2007-03-11 10:13:46 · answer #1 · answered by Anonymous · 0⤊ 0⤋
i find having my teacher show me a few problems helps because i just copy what he did
2007-03-11 16:51:36 · answer #2 · answered by Miss Casey 4 · 0⤊ 0⤋