Construction of Frequency Polygon without using Histogram

Q. The graph below shows the ages of presidents of a country at the time of inauguration or start of their tenure.

Find the correct option(s) among the following.

1. The total number of presidents is 45.
2. The youngest president was 44 years old
3. The youngest president was 39 years old.
4. The oldest president is 74 years old.

Q. Which of the following things is needed in building the frequency polygon?

1. Histogram
2. Class marks
3. Suitable scale
4. Grouped data

Q. The frequency polygon below shows marks obtained by students of a class.

From the graph, it can be said that the maximum number of students have scored marks between ____.

1. 60-70
2. 55-65
3. 50-60
4. 60

Q. The following data were acquired in a study of diabetic patients.

Ages	10-20	20-30	30-40	40-50	50-60
No. of patients	7	11	19	9	1

Construct a frequency polygon for the data given.

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2. 
3. 
4. 

Q.

Make a frequency polygon from the given data.

$$\begin{array}{cc}Weight\left(kg\right)& NumberOfStudents\\ 35.5-40.5& 5\\ 40.5-45.5& 2\\ 45.5-50.5& 12\\ 50.5-55.5& 2\\ 55.5-60.5& 45\end{array}$$

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2. 

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4. 

Q. 45 students across the different levels of Intelligent Quotient are distributed in the grouped table given below.

IQ	60-70	70-80	80-90	90-100	100-110	110-120	120-130
No. of patients	3	6	9	11	11	7	2

Draw the frequency polygon for the data.

1. 
2. 
3. 
4. 

Q. The following data were acquired in a study of diabetic patients.

Ages	10-20	20-30	30-40	40-50	50-60
No. of patients	7	19	11	9	1

Construct a frequency polygon for the data given.

1. 
2. 
3. 
4. 

Q. When constructing frequency polygon, must be calculated.

1. Cumulative frequency
2. Average of frequency
3. Median of frequency
4. Class Marks

Q. 45 students across the different levels of Intelligent Quotient are distributed in the grouped table given below.

IQ	60-70	70-80	80-90	90-100	100-110	110-120	120-130
Students	3	6	5	9	11	7	2

Draw the frequency polygon for the data.

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2. 
3. 
4.