Worksheet: Data Handling

Data Handling Class 7 Worksheet Maths Chapter 4

Q.1. Find the mode of the following data:
24, 26, 23, 26, 22, 25, 26, 28

Q.2. Find the median of the following data:
8, 6, 10, 12, 14

Q.3. A fair die is rolled, find the probability of getting a prime number.

Q.4. Find the mean of the first 5 multiples of 3.

Q.5. Find the mean and median of first five prime numbers.

Q.6. A bag contains 5 white and 9 red balls. One ball is drawn at random from the bag. Find the probability of getting
(a) a white ball
(b) a red ball

Q.7. Find the range of the following data:
21, 16, 30, 15, 16, 18, 10, 24, 26, 20

Q.8. Find the average of the numbers 8, 13, 15.

Q.9. Find the median of the following data:
20, 14, 6, 25, 18, 13, 19, 10, 9, 12

Q.10. The following bar graph shows the number of books sold by a publisher during the five consecutive years. Read the bar graph and answer the following questions:
(i) About how many books were sold in 2008, 2009 and 2012 years?
(ii) In which years were 575 books were sold?
(iii) In which years were the minimum number of books sold?

Q.11. The marks obtained (out of 10) by 80 students in a class test are given below:
Find the mode of the above data.

Q.12. State true of false.
(i) A data set may have more than one mode.
(ii) The data set 4, 8, 11, 7, 5, 0 has the mode 0.
(iii) The median can be value which is not equal to any of the observation.
(v) Mean of the observations can be lesser than each of the observations.
(vi) Mean of a data set is the value which divides the value into two equal parts.
(vii) The value of median changes if the value in a data set are arranged in ascending order instead of descending order.
(ix) Mean of the data is always from the given data.
(x) Mode of the data is always from the given data.

Q.13. A batsman scored the following number of runs in six innings:
36, 35, 50, 46, 60, 55
Calculate the mean runs scored by him in an inning

Q.14. Fill in the blanks:
(i) The difference between the highest and lowest values of observations in a set of data is called the_________
(ii) The representation of numbers using bars of uniform width, the length of the bars depicting the frequency is called the_________
(iii) When the raw data is arranged in ascending or descending order, it forms an_________
(vi) The probability of getting 1 in tossing of coin is_________

Q.15. The mean of 5 numbers is 25. If the four numbers 16, 26, 31, 32. Find the fifth numbers.

You can find Worksheets Solutions here: Worksheet Solution: Data Handling

The document Data Handling Class 7 Worksheet Maths Chapter 4 is a part of the Class 7 Course Mathematics (Maths) Class 7.
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Mathematics (Maths) Class 7

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FAQs on Data Handling Class 7 Worksheet Maths Chapter 4

 1. What is data handling?
Ans. Data handling refers to the process of organizing, analyzing, and managing data effectively. It involves tasks such as data collection, data storage, data cleaning, data transformation, and data analysis.
 2. Why is data handling important?
Ans. Data handling is important because it allows organizations to make informed decisions based on accurate and reliable information. It helps in identifying patterns, trends, and insights from the data, which can lead to improved business strategies and decision-making.
 3. What are the different methods of data handling?
Ans. There are several methods of data handling, including data collection, data storage, data cleaning, data transformation, and data analysis. Data collection involves gathering relevant data from various sources. Data storage involves storing the collected data in an organized manner. Data cleaning involves removing errors, duplications, and inconsistencies from the data. Data transformation involves converting the data into a suitable format for analysis. Data analysis involves applying statistical techniques and algorithms to extract meaningful insights from the data.
 4. What are some common challenges in data handling?
Ans. Some common challenges in data handling include data quality issues, data privacy and security concerns, data integration and compatibility issues, and the sheer volume of data. Ensuring data accuracy, protecting sensitive information, integrating data from different sources, and handling big data effectively are some of the challenges faced by organizations in data handling.
 5. What are the benefits of effective data handling?
Ans. Effective data handling brings several benefits, such as improved decision-making, enhanced operational efficiency, better customer insights, increased competitiveness, and the ability to identify and respond to market trends. It also helps in optimizing business processes, reducing costs, and identifying opportunities for growth and innovation.

Mathematics (Maths) Class 7

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