Mean is the average value of all the data sets that are given. The mean height of girls is 1.48
Given:
There are 32 students in a class, the mean height of 14 boys is 1.56. The mean height of all 32 students is 1.515.
According to the question, the total number of students is 32. Mean of the data is formulated as
[tex]\rm{ Mean=\dfrac{Sum\;of\;all\;data}{Total \;number\;of\;data}[/tex]
Now, total height of all students can be calculated as
[tex]32\times1.515=48.48[/tex]
And, total height of 14 boys can be calculated as
[tex]14\times 1.56=21.84[/tex]
Here, number of girls is 32-14=18.
Then,
total height of girls =48.48-21.84=26.64
Mean height of 18 girls is calculated as
[tex]26.64\div18=1.48[/tex]
Therefore, the mean height of the girls is 1.48.
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