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A group of students take a test.
The group consists of 12 boys and 8 girls.
The mean mark for the boys is 18
The mean mark for the girls is 16.5
Calculate the mean mark for the whole group.

Respuesta :

The mean mark for the whole group is 34.5

  • The calculation is as follows;

= The mean mark for the boys  + The mean mark for the girls

= 18 + 16.5

= 34.5

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