Answer:
4 is the median
Explanation:
median =( n+1) /2
= (7 +1)/2
=8/2
=4
12
First arrange the values in order from least to greatest
3, 4 12, 12, 13, 15, 20
The median is the number in the middle. Since 12 is the middle value of the data set, 12 is the median.
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