Finding the median using linear interpolation in a grouped frequency table Watch

Illidan2
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See this imgur link for the question (part b) and my working.

https://imgur.com/a/31SGUgM

Could you tell me where I went wrong? Thanks
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dextrous63
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(Original post by Illidan2)
See this imgur link for the question (part b) and my working.

https://imgur.com/a/31SGUgM

Could you tell me where I went wrong? Thanks
You need to use the bounds of the class interval (248 and 252), not the midpoints.
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