The histogram and the frequency polygon of a frequency distribution are given below. Answer the following questions:

What is the class whose frequency is 8?

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows,

The number of students who obtained less than $250$ marks is:

Study the graph and answer the question,

The number of workers in the factory whose daily wages are $₹450$ or more but less than $₹600$ is:

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows.

The number of students who obtained less than $350$ marks is what per cent more than the number of students who obtained $400$ or more marks? (correct to one decimal place)

The given histogram shows the frequency distribution of the speed of cars passing through a particular spot on a highway. Read the graph and answer the following question.

What percentage of cars were running with the speed of $90 \mathrm{kmph}$ and above?

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows.

If the total marks obtained by students be represented as a pie chart, then the central angle of the sector representing marks $200$ or more but less than $300$, is _____. (Correct to the nearest degree)

The given histogram shows the frequency distribution of the speed of cars passing through a particular spot on a highway. Read the graph and answer the following question.

What is the ratio of the number of cars with speed less than $60 \mathrm{kmph}$ to the number of cars with speed more than $70 \mathrm{kmph}$?

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows.

If the total marks obtained by students be represented as a pie chart, then the central angle corresponding to marks $250$ or more but less than $300$, is _____. (Correct to the nearest degree)

Draw histogram and frequency polygon on the same graph paper for the following frequency distribution:

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows.

The number of students who obtained less than $250$ marks is what per cent more than the number of students who obtained $400$ or more marks? (Correct to one decimal place)

The given graph shows the weights of students in a school on a particular day.

The number of students weighing less than $50 \mathrm{kg}$ is what percent less than the number of students weighing $55 \mathrm{kg}$ or more?

Study the graph and answer the question.

The number of workers in the factory whose weekly earning are $₹5,500$ or more but less than $₹7,500$ is:

Draw a histogram for the given data using a graph paper:

Estimate the mode from the graph.

The given histogram shows the frequency distribution of the speed of cars passing through at a particular spot on a highway. Study the graph and answer the questions that follows:

What percentage of cars were running with a speed of less than $70 \mathrm{km}/\mathrm{h}$?

Using graph paper, draw a histogram for the given distribution showing the number of runs scored by $50$ batsmen. Estimate the mode of the data:

Study the given graph which shows the number of workers with their wages and answer the question that follows:

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What is the ratio of the total number of worker whose daily wages are $₹450$ or above but less than $₹500$ to the total number of workers whose daily wages are $₹650$ or above?

Represent the following data by histogram:

The given graph shows the marks obtained by the students in an examination.

The numbers of students who obtained less than $300$ marks is what percent more than the number of students who obtained $350$ or more marks? 

The time required for some students to complete a science experiment and the number of students is shown in the following grouped frequency distribution table. Draw the frequency polygon with the help of histogram using given information: