Question

Calculate Arithmetic mean from the following data : Height ( in inches ) 74 75 76 77 79 83 87 89 91 No. of students. 2 7 11 22 16 18 20 19 17 ​

Answer 1

Step-by-step explanation:

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Height=>

$\frac{74 + 75 + 76 + 77 + 79 + 83 + 87 + 89 + 91}{9} = \\ \frac{640}{9} = 71.11111$

No. of students=>

$\frac{2 + 7 + 11 + 22 + 16 + 18 + 20 + 19 + 17}{9} = \frac{132}{9} = 14 \frac{2}{3}$