The customer had a coupon for a 6% discount on a $12 (whole) meal. What is the total that she paid?
1 answer:
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To find the mean transaction amount. We need to understand mean first.
Mean (or average) is a number that expresses the central value in a set of data, which is calculated by dividing the sum of the values in the set by their number of values.
Here, the transactions shown are
$250, -$60, -$94, $300, and -$186. So there are 5 transactions.
Now mean transaction amount is given by:
So, the mean transaction amount over 5 transactions is $42.00.