Question

Find out the median of the following series
Size 20 25 30 351 40 45 50 55
Frequency 14 18 33 30 20 15 13 7​

Answer 1

Answer:

S.No, Height (cms). 1 2 3 4 5 6 7, 140 142 144 145 147 149 151. N = 7 ... 25 30, 14 18 33, 14 14 + 18 = 32 32 + 33 = 65. 35, 30, 65 + 30 = 95. 40 45 50 55, 20 15 13 ... This item appears first of all in 95th cumulative frequency of the series. Therefore, median ... Find out median of the following series, using graphic technique: ...

Answer 2

$\sf \red{median = size \: of \: ( \frac{n + 1}{2} )th \: item} \: \\ \sf \orange{( \frac{150 + 1}{2}) = \frac{151}{2} } \\ \sf \green{75.5th \: item} \\ \star\sf \blue{median = 35}$