Jessica Widjaja's answer to Yiadya's Secondary 4 E Maths Singapore question.

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Jessica Widjaja
Jessica Widjaja's answer
2 answers (Tutor Details)
1st
The lower quartile is 25%, the median is 50%, upper quartile is 75%. $20 is the lower quartile, hence below $20 meaning, 25% of toys are below that price.