The mean of $19$ observations is $4 .$ If one more observation of $24$ is added to the data, the new mean will be
$4$
$5$
$6$
$7$
New mean $=\left(\frac{19 \times 4+24}{20}\right)=\frac{100}{20}=5$
The average marks in English of a class of $24$ students is $56 .$ If the Marks of three students were misread as $44,45$ and $61$ in lieu of the actual marks $48,59$ and $67$ respectively, then what would be the correct average ?
The average of the first $100$ positive integers is
What was the average in $Rs.$ daily expenditure of a man in $1999$ who spent $Rs. \,6535$ in the first half year and $Rs.\, 88165$ in the last?
$A , B , C , D\, \& \,E$ are five consecutive even numbers. Average of $A$ and $E$ is $46 .$ What is the largest number?
The average of first three numbers is double of the fourth number. If the average of all the four numbers is $12,$ find the $4^{th}$ number.
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