Histogram of Grouped Data

Directions: Study the following histogram and answer the following questions.


The total number of persons in the age group of $15$ years to $45$ years is:

The graphical representation of cumulative frequency distribution is called-

Histogram is used for presentation of the following type of series.

The following histogram represents the distribution of total household expenditure (in ₹) of 200 manual workers in a city.

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The number of workers whose total expenditure is $₹350$ and above is what percentage less than the number of workers whose total expenditure is less than $₹250$?

The histogram given below presents the frequency distribution of average runs scored by $50$ selected players from a district in local cricket tournament. 

Study the histogram and answer the question that follows.

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How many players scored $30.5$ runs or less?

Study the histogram showing the marks obtained by students in an examination and then answer the given question.

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The number of students who got marks between $200$ and $300$ is what percent more than the number of students who got $350$ or more marks?

In a factory, there are $39$ workers who have been categorised into five groups ($A, B, C, D, E$) on the basis of the range of their daily wages (in multiples of $₹100$). The distribution is presented through a Histogram shown below:

What is the ratio of the number of employees whose daily wages are $₹200$ or more but less than $₹400$ to that of the number of employees whose daily wages are $₹400$ or more but less than $₹600$?

Study the given bar graph shows the life time of neon lamps and the number of neon lamps and answer the question that follows.

The number of neon lamps having life $500$ hours or more but less than $700$ hours is what percent of the total number of neon lamps having life $800$ hours or more?

Some persons went on an outstation tour. The histogram shows their ages.

If the children of age less than $15 \mathrm{years}$ got concession, then how many persons got the concession?

Study the given bar graph shows the life time of neon lamps and the number of neon lamps and answer the question that follows.

The number of neon lamps having life $800$ hours or more but less than $1000$ hours are what percent of the total number of neon lamps having life $700$ hours or less?

The histogram shows the marks scored by $40$ students in a test with maximum $30$ marks. How many students scored $10$or more marks?

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The histogram shows the marks scored by $40$ students in a test with maximum $30$ marks.

What is the ratio of the number of students who scored marks in the class intervals $10-15 \text{and} 15-20$ taken together to that of the students in the class intervals $5-10 \text{and} 25-30$ taken together?

Some families went on an outstation tour. The given histogram shows their ages.

What is the ratio of persons of age less than $15 \mathrm{years}$ to that of persons of age less than $30 \mathrm{years}?$

The histogram shows the marks scored by $40$ students in a test with maximum $30$ marks.

What is the percentage of the students who scored less than $50\%$ marks?

Some persons went on an outstation tour. The histogram shows their ages:

How many persons are less than $20 \mathrm{years}$ of age?

The histogram shows the marks scored by $40$ students in a test with maximum $30$ marks.

What is the percentage of the students who scored less than $20$ marks?

Study the graph which shows the daily wages with number of workers and answer the question that follows.

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If the ratio of the total number of workers whose daily wages are less than $₹450$ to the total number of workers whose daily wages are $₹600$ or above is $a:b$, then what is the difference between $b$ and $a$.

In a factory, there are $39$ workers who have been categorised into five groups ($A, B, C, D, E$) on the basis of the range of their daily wages (in multiples of $₹100$). It is ensured that the daily wage of no worker is an exact multiple of $₹100$. The distribution is presented through the given histogram.

If two Managers are engaged to supervise the workers, with daily wages ranging between $₹700$ and $₹800$, then what will be the average daily wage (nearest to an $₹$) of all members of staff of the factory?

The histogram shows the weights of students of class $X$ in a school.

Let $x$ be the number of students whose weight is less than $50 \mathrm{kg}$ and $y$ be the number of the students whose weight is greater than or equal to $60 \mathrm{kg}$. What is the value of $x : y$?

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?