Question

find the mode.

Class 4-8 8-12 12-16 16-20 20-24 24-28

fi 9 6 12 7 15 1​

Answer 1

Answer:

21.45

Step-by-step explanation:

Modal Class = 20 - 24

Lower Limit = 20

Height = 24 - 20 = 4

F 1 [Frequency of Modal Class]= 15

F 2 [Frequency of Class Succeeding Modal Class] = 1

F 0 [Frequency of Class Preceding Modal Class] = 7

Mode = 20 + (15 - 7)÷(2 × 15 - 7 - 1) × 4 = 21. 45