Math, asked by anncurtis40, 1 month ago

The mean score for 12 boys is 12. The mean score for 17 girls is 15. What is the mean score for the whole class

Answers

Answered by prajnalisarisa

0

Answer:

13.75

Step-by-step explanation:

Mean score for 12 boys = 12

which means, (Total score of 12 boys)/12 = 12

or the Total score of the 12 boys = 12×12 = 144

Mean score for 17 girls = 15

which means, (Total score of 17 girls)/17 = 15

or the Total score of the 17 girls = 17×15 = 255

The mean score for the whole class =

(Total score of the students)/(Total number of students)

= (144+255)/(12+17) = 399/29 = 13.75

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