My Math Forum Median Question

 May 2nd, 2009, 03:50 PM #1 Newbie   Joined: May 2009 Posts: 2 Thanks: 0 Median Question I all, I'm sure I'm being stubid but i need some clarification. The following tables show the scores of two groups of students in a test question. i) Mark 0 1 2 3 4 Frequency 10 5 8 x 3 Determine the value of x if the median of these marks is 1.5 I have a formula for the median when it's odd or even and they don't seem to work n is odd: x= ( xn + x(n+1) )/ 2 Thanks
May 2nd, 2009, 04:08 PM   #2
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Re: Median Question

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 Originally Posted by shinytinypebble I all, I'm sure I'm being stubid but i need some clarification. The following tables show the scores of two groups of students in a test question. i) Mark 0 1 2 3 4 Frequency 10 5 8 x 3 Determine the value of x if the median of these marks is 1.5 I have a formula for the median when it's odd or even and they don't seem to work n is odd: x= ( xn + x(n+1) )/ 2 Thanks
median means there are the same number above and below. In your table there are 15 scores below 1.5 and 11 + x above 1.5. I'm sure you can figure out what x is.

 May 3rd, 2009, 03:06 AM #3 Newbie   Joined: May 2009 Posts: 2 Thanks: 0 Re: Median Question ok, so x= 4. It's just odd that I haven't been tought how to logically think when working through these questions. Thanks a lot!!!!

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