Question

In a class test, the marks scored by 11 students are 13, 17, 20, 5, 3, 19, 7, 6, 11, 15
and 17. Find the: (i) median (ii) lower quartile (iii) upper quartile

Answer 1

Answer:

(i)Median = 13 (ii)lower quartile =6 (iii)upper quartile =17

Step-by-step explanation:

To find median , arrange all in ascending order : 3,5,6,7,11,13,15,17,17,19,20...middle number is median , so median is 13

Lower quartile is median of first half of data, median of 3,5,6,7,11 is 6

Upper quartile us median of second half of data ,median of 15,17,17,19,20 =17