Question

Match its group with its percentage or mean using the table below.

Answer 1

1)
`\bar x = 6.2`, 2)
`\bar x = 8.75`, 3)
`\bar x = 4.5`, 4)
`p = 40\,\%`, 5)
`p = 60\,\%`, 6)
`p = 10\,\%`

Explanation:

1) Mean length of all fish in the sample:

`\bar x = (12+5+3+5+8+2+10+9+4+4)/(10)`

`\bar x = 6.2`

2) Mean length of adult fish in the sample:

`\bar x = (12+5+8+10)/(4)`

`\bar x = 8.75`

3) Mean length of juvenile fish in the sample:

`\bar x = (5+3+2+9+4+4)/(6)`

`\bar x = 4.5`

4) Percentage of sample that were adult fish:

`p = (4)/(10)* 100\,\%`

`p = 40\,\%`

5) Percentage of sample that were juvenile fish:

`p = 100\,\% - 40\,\%`

`p = 60\,\%`

6) Percentage of sample that were juveniles over 8 inches long:

`p = (1)/(10)* 100\,\%`

`p = 10\,\%`