Question

140-145
145 -150
150-155
155-160
160-165
__________
frequency
3
4
3
2
3
find median ​

Answer 1

Answer:

The median class is 155 - 160.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

140-145 (height) | 3 (f1) | 3 (cf)

145 -150 | 4 | 12

150-155. | 3 | 15

155-160 | 2 | 17

160-165 | 3 | 20

Median = l + {h × (N/2 - cf)/f}

Total, Σf = n = 20

Therefore, n = 20/2 = 10

Hence, the median class is 145-150.

Median = 145 + {5 × (10 - 3)/4)

= 145 + {5 × (7/4)}

= 145 + 35/4

= (580 + 35)/4

= 615/4

= 153.75

Hence, the median is 153.75.