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Seven people waited for a bus for 12, 5, 9, 15, 7, 11 and 20 minutes.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Seven people waited for a bus for and minutes. What is the median waiting time?
Need a reminder? The key ideaShow
The median is the middle value of the sorted list. With an even number of values, it is halfway between the two middle ones.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Sort. minutes.
Step 2. The middle. With values, the median is the th value.
Answer: minutes.
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