Question: Following is the distribution of marks obtained by 500 candidates in the statistics paper of a civil services examination:
+ marks more than: 0 10 20 30 40 50
+ number of candidates: 500 460 400 200 100 30
Calculate the lower quartile marks. If of the candidates pass in the paper, find the minimum marks obtained by a passing candidate.
In the above problem, I am able to find the first part to calculate lower quartile marks but not able to find the second section.
Anyone, please help I am a newbie to statistics.
Thanks in advance, please ignore the bad English.