Class intervals in a grouped frequency are given as $4‐11, 12‐19, 20‐27, 28‐35, 36‐43$. Write the next two intervals.

The bar graph shows the number of students enrolled for a vocational course in institutes $A$ and $B$ during $5 \mathrm{years}$ from $2014$ to $2018$.

In which year, the number of students enrolled in institute $A$ is $x\%$ less, where $25 < x < 30$, than the number of students enrolled in institute $B$ in the same year?

The cumulative frequency of the class $20-30$ of the above frequency distribution is _____.

A survey was conducted in a class to find the preference of students for the soft drinks and recorded as follows:

Make a bar graph with a suitable scale for the above data.

The given bar graph shows the imports and exports (in crore $₹$) of steel for $5$ years from $2014$ to $2018$.

What is the ratio of average export to average import over the five years?

Find the value of $x$ in following table.

The table below shows, children of a class sorted according to their marks in an examination.

If we arrange the children from the one with the least mark to the one with the greatest, then what will be the assumed mark of the ${12}^{\text{th}}$ student?

Study the given bar graph and answer the question.

The bar graph given below represents the data of the Production of Paper (in ten lakh tonnes) by three different companies $X, Y$ and $Z$ during the years $2008$ to $2012$. The $x$-axis shows the Years and the $y$-axis represents the Production of Paper (in ten lakh tonnes).

(Note: The data shown below is only for mathematical exercise. They do not represent the actual figures.)

Which company/companies had the maximum average production for the given five years period?

The given table represents the exports (in ₹ crores) of four items A, B, C and D over a period of six years. Study the table and answer the question that follows.

In which year, the exports of item $\mathrm{D}$ were $1.4 \mathrm{times}$ the average exports of item $\mathrm{B}$ during six years;

Directions: The number of male and female members in different organisations $A, B, C, D$ and $E$ are given in the bar graph.

What is the ratio of the average number of females in all five organisations to the average number of males in all five organisations?

Directions: The Bar graph given below presents the marks (out of $100$) obtained by $10$ students in a subject.

What is the average of the marks obtained by all the students?

Cough syrup of three different flavours - $A, B$ and $C$ (in lakh bottles) manufactured by a medicine company over a period of five years from $2010$ to $2014$ has been shown in the bar graph.

The ratio of the average production of all flavours in $2012$ to the difference of the average production of flavour $A$ in $2012, 2013$ and $2014$ and the average production of flavour $C$ in $2012, 2013$ and $2014$ is:

The bar graph shows the number of students enrolled for a science course in institutes $A$ and $B$ during $5 \mathrm{years}$ from $2014$ to $2018$,

What is the ratio of the total numbers of students enrolled in institute $B$ in $2015$ and $2017$ to that of students enrolled in institute $A$ in $2014$ and $2016$?

The following Bar Graph represents the Production of Fertilizers by Company $A$ and Company $B$ (in $10000$ tonnes) Over the Years from $2005$ to $2010$. The $X$-axis represents the years, and the $Y$-axis represents the Production of Fertilizers (in $10000$ tonnes).

Note: The data shown below is only for mathematical exercise. They do not represent the actual figures of companies

What is the average production (in $10000$ tonnes) of fertilizers in $2008, 2009$ and $2010$ of Company $A$?

The given table represents the exports ( in$₹$crores) of four items $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ over a period of six years. Study the table and answer the question that follows:

The total exports of item $\mathrm{A}$ from $2012$ to $2014$ is what percentage less than the total exports of all the four items in $2015$:(Correct to one decimal place)

The following table gives the frequency of vowels used in the page of a book.