Question 1209042
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SAT average score is 500 with standard deviation of 150 points. 
What is the standard score for a person who scores 630?
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<pre>
standard score = {{{(observation - mean)/SD}}} = {{{(630-500)/150}}} = {{{130/150}}} = {{{13/15}}} = 0.8667  (rounded).   <U>ANSWER</U>
</pre>

Solved.