If Hayley wanted to prove to her parents that she didn't spend a lot of money on clothing, she should use the Mode.
The measure of central tendency that Hayley should use is the one that gives her the lowest amount so that she can prove she didn't spend much.
That measure would be the Mode which in this case is $25. It is lower than the Median of $27 and the mean.
Find out more on measures of central tendency at https://brainly.com/question/17631693.
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