MediumStatistics & Data ScienceMiddle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralStatistics Basics › Spread of DataNumerical
Find Q1, the median, Q3 and the IQR of 4, 9, 11, 15, 18, 20, 26, 31.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Find Q1, the median, Q3 and the IQR of .
Need a reminder? The key ideaShow
Range = largest smallest. Q1 and Q3 are the medians of the lower and upper halves (leave the median out when the count is odd), and IQR .
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. Median. .
Step 2. Q1. The median of is .
Step 3. Q3. The median of is .
Step 4. IQR. .
Answer: , median , , IQR .
Discussion (0)
Log in to join the discussion.
Loading…