Calculate IQR in individual series:
Mark's: 1, 2, 3, 4, 6, 8, 9, 10, 11, 13, 15, 17, 19, 20, 21, 22, 23, 24, 25

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Calculate IQR in individual series:
Mark's: 1, 2, 3, 4, 6, 8, 9, 10, 11, 13, 15, 17, 19, 20, 21, 22,
23, 24, 25

Shruti Mishra · Accepted Answer

Dear Student,

Total number of terms n = 19
Arranging them in ascending order :
1,2,3,4,6,8,9,10,11,13,15,17,19,20,21,22,23,24,25

Median = 13

Therefore, the set of data is divided into two parts:
1,2,3,4,6,8,9,10,11 and 15,17,19,20,21,22,23,24,25

Q1 = Median of first part = 6
Q3 = Median of second part = 21

Formula for interquartile range is given by: IQR = Q3 –
Q1
IQR = 21- 6 = 15

Regards

Calculate IQR in individual series: Mark's: 1, 2, 3, 4, 6, 8, 9, 10, 11, 13, 15, 17, 19, 20, 21, 22, 23, 24, 25