Following are the weights (in kg) or 10 new born babies in a hospital on a particular day:
3.4, 3.6, 4.2, 4.5, 3.9, 4.1, 3.8, 4.5, 4.4, 3.6. Find the mean $\overline{X}$
Given:
The weights (in kg) of 10 newborn babies in a hospital on a particular day are 3.4, 3.6, 4.2, 4.5, 3.9, 4.1, 3.8, 4.5, 4.4, 3.6.
To do:
We have to find the mean $\overline{X}$.
Solution:
We know that,
Mean $\overline{X}=\frac{Sum\ of\ the\ observations}{Number\ of\ observations}$
Therefore,
Mean weight $\overline{X}=\frac{3.4+3.6+4.2+4.5+3.9+4.1+3.8+4.5+4.4+3.6}{10}$
$=\frac{40}{10}$
$=4$
Hence, the mean $\overline{X}$ is $4\ kg$.
Related Articles
- The weights of new born babies (in kg) in a hospital on a particular day are as follows:$2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$Rearrange the weights in descending order.
- If $\overline{X}$ is the mean of the ten natural numbers $x_1, x_2, x_3, …, x_{10}$, show that $(x_1 - \overline{X}) + (x_2 - \overline{X}) + … + (x_{10} - \overline{X}) = 0$.
- List in C++(4.5)
- How many moles are 3.6 g of water?
- Simplify:$4.2\times10^2+3.8\times10^2$
- M and N are points on the sides PQ and PR respectively of a $\triangle PQR$. For each of the following cases, state whether $MN \parallel QR$: $PM = 4\ cm$, $QM = 4.5\ cm, PN = 4\ cm, NR = 4.5\ cm$
- A door of length $2\ m$ and breadth $1\ m$ is fitted in a wall. The length of the wall is $4.5\ m$ and the breadth is $3.6\ m$ $(Fig11.6)$. Find the cost of white washing the wall, if the rate of white washing the wall is $₹\ 20\ per\ m^2$."
- $E$ and $F$ are points on the sides $PQ$ and $PR$ respectively of a $\triangle PQR$. For each of the following cases, state whether $EF \| QR$:(i) $PE = 3.9\ cm, EQ = 3\ cm, PF = 3.6\ cm$ and $FR = 2.4\ cm$(ii) $PE = 4\ cm, QE = 4.5\ cm, PF = 8\ cm$ and $RF = 9\ cm$(iii) $PQ = 1.28\ cm, PR = 2.56\ cm, PE = 0.18\ cm$ and $PF = 0.36\ cm$
- The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them (in kg) are 52, 54, 55, 53, 56 and 54. Find the weight of the seventh student.
- $S.P.=₹\ 630.30$, $loss=4.5$ % , $C.P.=?$.
- A \( 6 \mathrm{~m} \) long ladder leans on a wall to reach the height of \( 3.6 \mathrm{~m} \) on the wall. Find the distance of the lower end of the ladder from the wall.
- In an experiment, 4.5 kg of a fuel was completely burnt. The heat produced was measured to be 1,80,000 kJ. Calculate the calorific value of the fuel.
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies