This video shows us the method to find the median and the inter-quartile range. The first step involves the arrangement of the numbers in the ascending order. Median is the middle number. The middle number is the number at (number of numbers + 1)/2 if the number of numbers is odd or the (number of number)/2 if the number of numbers is even. In the example the number is located at [(11+1)/2] or the 6th number. The inter-quartile range is higher quartile - lower quartile. The higher quartile is the middle number of the numbers greater than the median. In the video, this is 7. Similarly, the lower quartile is the middle number of the numbers less than the median or 1 in the video. Thus inter-quartile range = 7 - 1 or 6. This finishes the video.
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