Score Conversion chart

[jeejeejiji]

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Are the score conversion charts in the ADA, kaplan blue book just an estimate of the real grades or are they the exact values used for grading on the real test?
And does anybody know where I could find a score conversion chart with an estimate for the total grade (including reading and math)? I would like to make an estimate for my overall AA but I could only see the the total science scores on these charts

 

[jdoc04]

Barrons DAT book has one