Average height of class a is 160 cm and that of class b is 170 cm.Find the average height of students of both the classes put together
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height of class a=160
height of class b=170
the average height=sum of observations/no of observations
i.e.,160+170/2
330/2
165
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Answer:
Insufficient data
Step-by-step explanation:
01. Let us assume class A has X no. of students and class B has Y no. of students.
02. Then, avg height= (X*160 + Y*170)/(X+Y).
03. So, to calculate avg height we at-least need ratio between total no. of students of two classes or exact no. of students of both the classes.
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