SAT Math· difficulty 4/5
A list of 7 values has median 18. The values 12 and 24 are added. What is true about the new median?
It must increase.
Cannot be determined without more info.
It stays at 18.
It must decrease.
Explanation
Adding one value below and one above the median (12 < 18 < 24) shifts surrounding positions but the new median's specific value depends on adjacent values. Cannot pinpoint without more data.
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