Question

Use your table to work out what fraction of the fish are 50cm or more in length

Answer 1

We need to find frequency in the region.

`\\ \sf\longmapsto 50\leqslant l`

We should calculate in it frequencies of below

`\\ \sf\longmapsto 50\leqslant l<60`

`\\ \sf\longmapsto 60\leqslant l<80`

`\\ \sf\longmapsto 80\leqslant l<100`

`\\ \sf\longmapsto 100\leqslant l<150`

Hence

total frequency:-

`\\ \sf\longmapsto 8+b+c+d`