Mean

The arithmetic mean of $100$ observations is$24, 6$is added to each of the observations and then each of them is multiplied by $2.5$. Find the new arithmetic mean_____.

The mean of $100$items was $46$. Later on it was discovered that an item $16$was misread as $61$ and another item $43$ was misread as $34$. It was also found that the number of items was $90$ and not $100$. Then what is the correct mean?

Find the mean of the following data :

Find the mean weight of packets of coffee using step deviation method:

Find the mean of the following data:

Find the mean of the following frequency distribution using step-deviation method:

Find the mean :

The symbol $\mu$ is used for representing _____ mean.

The symbol $\overline{\mathrm{X}}$ is used for representing _____ mean.

Which one of the following symbol is used to represent the population mean?

Which one of the following symbol is used to represent the sample mean?

Find the difference between the Median and Mean of the following data set $\left\{2,2,3,5,6,7,7,8,8,9,9,\right\}$.

The mean consumption of electricity of a small company is $34 watt/day$ for first $7 days$. for next $6 days$ the mean consumption is $30 watt/day$ while for further $7 days$ its mean consumption is $36 watt/day$. the mean consumption of remaining $10 days$ is $30 watt/day$ find the mean consumption of entire month if the above data is given of November month.

The mean number of people who visited temple on Sunday, Monday, Tuesday and Wednesday is $300$ and the mean number of people who visited temple on Monday. Tuesday, Wednesday and Thursday is $400$. If the ratio of the number of people who visited temple on Sunday to Thursday is $13:15$, then find the total number of people who visited temple on Sunday and Thursday.

In a group of seven persons playing football. If the mean age of each person is $30 years$, the mean age of the first two persons is $21 years$ and the mean age of the next three persons is $24 years$. Also, the age of the seventh person is $24 years$ more than the age of the sixth one, then find the age of the seventh person?

The mean salary of female employees in a company is $\mathrm{Rs}3400$. and that of male employees in a company is $\mathrm{Rs}4000$. If the mean salary of all the employees is $\mathrm{Rs}3800$. Find the total number of male employees in a company if the number of females employees is $300$?

If the mode and median of values of an experiment are $3$ and $5$, respectively, then mean$=?$

Which one of the following averages can be the best average in the following data :
$391, 384, 591, 407, 675, 522, 777, 753, 2488, 1490$

The table given below shows the runs scored by $5$ players in four matches.

What is the correct order of averages of the given players in the four matches?

Mean of six observations $30, 68, 72, 53, 87$and $x$is $60$. Find the value of $x$.