document.write( "Question 426066: what does it mean when by score at z with mean of 60, and standard deviation of 7. How do I figure it out. Please explain in layman terms \n" ); document.write( "

Algebra.Com's Answer #296477 by stanbon(75887) $\"\"$ $\"About$

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what does it mean when by score at z with mean of 60,
\n" ); document.write( "and standard deviation of 7. How do I figure it out.
\n" ); document.write( "Please explain in layman terms.
\n" ); document.write( "---
\n" ); document.write( "A z-score tells you the number of standard deviations
\n" ); document.write( "a data value is from the mean of the data values.
\n" ); document.write( "It also tells you if the data value is below and above
\n" ); document.write( "the mean value.
\n" ); document.write( "-----
\n" ); document.write( "Let's say you want to know the z-value of 20.
\n" ); document.write( "Distance from mean = (20-60- = -40,
\n" ); document.write( "so 20 is 40 away from the mean and is below it.
\n" ); document.write( "----
\n" ); document.write( "Express that distance in standard deviations.
\n" ); document.write( "-40/7 = -5.7143
\n" ); document.write( "So 20 is 5.7143 standard deviations away from
\n" ); document.write( "the mean and it is below (or to the left of)
\n" ); document.write( "the mean.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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