Dory is looking for a classic 1967 Firebird. She finds these prices on the Internet: $18,000, $77,000, $22,000,

$21,200, $19,000, $17,500, and $22,500. She computes the mean as $28,171.43. This number doesn’t seem to be a good

representative of the data. How can she find a better representation?

There is an outlier, an outlier is when some information is extremely different than the rest of the data. In this case, $77,000 is the outlier. So, a better representation of the data would be the MEDIAN. Put the numbers in order from least to greatest and the middle number will be the answer.

$17,500, $18,000, $19,000, $21,200, $22,000 $22,500, $77,000.
Then cross out one on each side from left to right until you get the median/middle number, which is $21,200.

Dory is looking for a classic 1967 Firebird. She finds these prices on the Internet: $18,000, $77,000, $22,000, $21,200, $19,000, $17,500, and $22,500. She computes the mean as $28,171.43. This number doesn’t seem to be a good representative of the data. How can she find a better representation?

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