document.write( "Question 1155564: What is the mean of 84, 86, 85, 76, 89 \n" ); document.write( "

Algebra.Com's Answer #778150 by greenestamps(13203) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "mean = average

\n" ); document.write( "Find the sum of the five numbers and divide by five....

\n" ); document.write( " $\"%2884%2B86%2B85%2B76%2B89%29%2F5\"$

\n" ); document.write( "You can do the simple calculation.

\n" ); document.write( "In an example like this, where the numbers are close together and there are only a few of them, you can also find the average by guessing an average and finding how the given numbers compare to that average.

\n" ); document.write( "For example, suppose you look at these numbers and think the average is about 85. Now compare each of the numbers to that guess:

\r\n" );
document.write( "84:  -1\r\n" );
document.write( "86:  +1\r\n" );
document.write( "85:   0\r\n" );
document.write( "76:  -9\r\n" );
document.write( "89:  +4\r\n" );
document.write( "-------\r\n" );
document.write( "sum: -5

\n" ); document.write( "The sum of the five numbers together is 5 less than what it would be if the average were 85, so on average the numbers are 1 less than 85. So the average of the five numbers is 84.
\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );