Question

-9, In the following frequency distribution, find the median class.
Height (in cm) 140 – 145 145 – 150 150 - 155 155 - 160
Frequency 5 I 15 25 30
160 - 165
15
165 - 170
T 107​

Answer 1

Answer:

163.7

Step-by-step explanation:

CI F C

• 140-145 5 5
• 145-150 1 6
• 150-155 15 21
• 155-160 25 46
• 160-165 30 76

1. 165-170 15 91

• Total(n)= 91

• n÷2= 91÷2= 45.5

therefore

• l= 155
• h= 5
• n÷2= 45.5
• CF= 21
• f= 25

median= l+(n÷2 - cf÷f) × h

= 155+(45.5-21÷25)×5

= 155+(43.5÷25)×5

= 155+(1.74)×5

= 155+(8.7)

= 163.7

MEDIAN= 163.7