Question

The weight(in kg) of 8 students are listed as 45,38.5,42.4,44.3,35.8,39.1,41.5,39.4.Then find the A.M​

Answer 1

Question :-

The weights (in kg) of 8 Students are listed as 45, 38.5, 42.4, 44.3, 35.8, 39.1, 41.5 and 39.4.

Find the Mean Weight (Arithmetic Mean) of the Students.

$\begin {gathered} \end {gathered}$

Solution :-

Mean Weight = $\mathrm {\dfrac{Sum\: of\: the\: Weights\: of\: the\: Students}{Number\: of\: Students}}$

$\begin {gathered} \end {gathered}$

$\begin {aligned} \therefore\ \bold {Mean\: Weight} &= \dfrac{(45+38.5+42.4+44.3+35.8+39.1+41.5+39.4)}{8}\: kg\\\\&\Rightarrow \dfrac{326}{8}\: kg = \underline {\boxed {\bf 40.75\: kg}}\ \clubsuit \end {aligned}$

$\begin {gathered} \end {gathered}$

Hence, the Mean Weight of the Eight Students is 40.75 kg.

$\begin {gathered} \end {gathered}$

Additional Information :-

Arithmetic Mean :-

The Average of a given set of Numbers is called the Arithmetic Mean, or simply the Mean, of the given Numbers.

$\dagger\ \mathrm{Mean = \dfrac{Sum\: of\: Observations}{Number\: of\: Observations}}$