Statistics (Percentiles)
When answering a question about calculating the median from a table, the value n was 55. So n/2 gave me 27.5. I then rounded this up to 28 and used interpolation to find the 28th value/the median.
When finding the 33rd percentile in the next question I did the following: (33/100)*(55+1) which gave me 18.48. However in the mark scheme this was not rounded down. I'm confused as to why this is.
Thanks
When finding the 33rd percentile in the next question I did the following: (33/100)*(55+1) which gave me 18.48. However in the mark scheme this was not rounded down. I'm confused as to why this is.
Thanks
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