A variable that measures the effect of a manipulated variable, is known as: 

The pie-chart represented below shows the spending by a family on various items during the year $1999$. Study the pie-chart carefully and answer the following question:

If the total expenditure of the family for the year $1999$ was $₹46000$, then the savings (in rupees) of the family was

The pie-chart represented below shows the spending by a family on various items during the year $1999$. Study the pie-chart carefully and answer the following question:

According to the pie-chart, the maximum amount was spent on which item?

The pie-chart represented below shows the spending by a family on various items during the year $1999$. Study the pie-chart carefully and answer the following question:

If the total amount spent during the year $1999$ was $₹46000$, then the amount (in rupees) spent on food was

The pie-chart represented below shows the spending by a family on various items during the year $1999$. Study the pie-chart carefully and answer the following question:

The ratio of the total amount of money spent on housing to the total amount of money spent on education was

The pie-chart represented below shows the spending by a family on various items during the year $1999$. Study the pie-chart carefully and answer the following question:

If the total amount spent during the year $1999$ was $₹46000$ then how much money (in rupees) was spent on clothing and housing together?

The population of a city is plotted as a function of time (years) in graphic form below:

Which of the following inference can be drawn from the above plot?

The natural numbers from $1$ to $2100$ are entered sequentially in $7$ columns, with the first $3$ rows as shown. The number $2002$ occurs in column $m$ and row $n$. The value of $m+n$ is: