MEDIAN

Median  

The middle value when all the data are arranged in an increasing or decreasing order. 

If the number of values is odd, then the median is the middle value. 

If the number of values is even, then the median is the mean of the two middle values.

(Nilai yang berada ditengah apabila data disusun menurut tertib menaik atau menurun.

Jika data-data berbilangan ganjil, maka median adalah nilai yang berkedudukan di tengah.

Jika data-data berbilangan genap, maka median ialah min bagi dua nilai yang berkedudukan di tengah)

Example 1 : 

Find the median

10g, 12g, 18g, 10g, 16g

Solution:                                   

Increasing Order (Tertib Menaik)

10, 10, 12 , 16, 18

Median = 12g

    Example 2 : 

    Find the median

    20, 22, 28, 20, 26,24

Solution:

 Increasing Order (Tertib Menaik)

 20, 20, 22, 24, 26, 28

     Median  =  (22+24) ÷ 2 

                   = 46 ÷ 2 = 23

Example 3:

Find the median

Score	1	2	3	4	5
Frequency	3	4	5	3	6

Solution:

Total frequency (Jumlah kekerapan)

= 3 + 4 + 5 + 3 + 6 = 21

      Median = Number of the 11^th score = 3

Example 4 : 

Find the median

Marks	80	81	82	83	84
Frequency	4	6	7	0	3

Solution:

Total frequency (Jumlah kekerapan)

= 4+6+7+0+3 = 20

Median= Number of the 10^th and 11^thmarks

     =(81 + 82) ÷ 2 =163 ÷ 2 = 81.5