number format adding one?

[Dolemite50]

Hi,
I am currently trying to build a rating system and it seems my script is adding one to the result.

$getRat = "SELECT AVG(votes) AS rating, COUNT(votes) as count FROM svotes WHERE songid = '$songid'"; 
$grating = mysql_query($getRat, $conn) or die(mysql_error());
									$rowr = mysql_fetch_array($grating);
									$rating = number_format($rowr['rating'],2);
									$vcount = $rowr['count'];

If the mysql has 4 entries in the votes columns that are "5", the echoed result of $rating will be 6.00? What am I doing wrong here?
Thanks.

[laserlight]

Print the value of the variables at various points (including the value of $rowr['rating']) and check.