The owner of a candle store studied the day's purchases. The 7 candles purchased had prices of:

$3.00$6.00$3.00$3.00$6.00$2.00$8.00
What was the mode of the amounts spent?

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The mode is the value that appears most frequently in a set of data. In this case, the value that appears most frequently is $3.00$, which is the mode.