Re: [PHP] Middle Number
Wouldn't this only work for an even ammount of numbers? Like 1, 2, 3, 4 has 4 numbers... - Original Message - From: Rick Widmer [EMAIL PROTECTED] Newsgroups: php.general To: Stephen [EMAIL PROTECTED]; PHP List [EMAIL PROTECTED] Sent: Friday, December 06, 2002 10:59 PM Subject: Re: [PHP] Middle Number At 09:45 PM 12/6/02 -0500, Stephen wrote: How can you find the meadian (or middle number) of a list of numbers? If there is an even amount of numbers, how would I still find it? load the list into an array, in numeric order... then: $List = array( 1,2,3,4,5,6 ); $Middle = ( count( $List ) - 1 ) / 2; $median = ( $List[ floor( $Middle ) ] + $List[ ceil( $Middle ) ] ) / 2; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Middle Number
At 07:05 PM 12/7/02 -0500, Stephen wrote: Wouldn't this only work for an even ammount of numbers? Like 1, 2, 3, 4 has 4 numbers... Did you try it? I'd hate to think I've done more work to solve your problem than you have... Even: $List = array( 1,2,3,4,5,6 ); $Middle = ( count( $List ) - 1 ) / 2; 2.5 =( 6 - 1 ) / 2 $median = ( $List[ floor( $Middle ) ] + $List[ ceil( $Middle ) ] ) / 2; ( $List[ 2 ]+ $List[ 3 ] ) / 2 3.5= 3 +4 /2 Odd: $List = array( 1,2,3,4,5 ); $Middle = ( count( $List ) - 1 ) / 2; 2 =( 5 - 1 ) / 2 $median = ( $List[ floor( $Middle ) ] + $List[ ceil( $Middle ) ] ) / 2; ( $List[ 2 ]+ $List[ 2 ] ) / 2 3 = (3 +3 ) / 2 It looks like it works to me. For details see: http://mathforum.org/library/drmath/view/57598.html At 09:45 PM 12/6/02 -0500, Stephen wrote: How can you find the meadian (or middle number) of a list of numbers? If there is an even amount of numbers, how would I still find it? load the list into an array, in numeric order... then: $List = array( 1,2,3,4,5,6 ); $Middle = ( count( $List ) - 1 ) / 2; $median = ( $List[ floor( $Middle ) ] + $List[ ceil( $Middle ) ] ) / 2; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Middle Number
How can you find the meadian (or middle number) of a list of numbers? If there is an even amount of numbers, how would I still find it? Thanks, Stephen Craton http://www.melchior.us What is a dreamer that cannot persevere? -- http://www.melchior.us -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Middle Number
At 09:45 PM 12/6/02 -0500, Stephen wrote: How can you find the meadian (or middle number) of a list of numbers? If there is an even amount of numbers, how would I still find it? load the list into an array, in numeric order... then: $List = array( 1,2,3,4,5,6 ); $Middle = ( count( $List ) - 1 ) / 2; $median = ( $List[ floor( $Middle ) ] + $List[ ceil( $Middle ) ] ) / 2; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
