<PRE><B>Question 1155564</B>
&lt;br&gt;
mean = average&lt;br&gt;
Find the sum of the five numbers and divide by five....&lt;br&gt;
{{{(84+86+85+76+89)/5}}}&lt;br&gt;
You can do the simple calculation.&lt;br&gt;
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.&lt;br&gt;
For example, suppose you look at these numbers and think the average is about 85.  Now compare each of the numbers to that guess:&lt;br&gt;&lt;pre&gt;
84:  -1
86:  +1
85:   0
76:  -9
89:  +4
-------
sum: -5&lt;/pre&gt;
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.&lt;br&gt;

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