Below are the good and bad effects of the industrial revolution:

1. The discovery of steam power and its practice from the year 1815 created threat to the Indian textile industry. 

2. The inventions of the spinning mule and power loom became more efficient and effective because of steam power. Consequently, it had reduced the cost of British cotton by 85% and made it internationally competitive. By the year 1820, Britain had become the leading world 

3. Indian farmers were forced to produce cotton plantation so that it can fuel English factories as India was then under British rule.

4. Industrial Revolution brought severe consequences to society. Farmers were forced to grow cash crops in place of food crops, which resulted in awfully deadly famines in India. 

5. For increasing production, the Factory owners used to hire unskilled labour, profited greatly by using children and women to run the machines. In the tender age of 6 years, many children were already working 14 hours a day in factories. 

6. Due to Industrial Revolution, urban cities started getting overcrowded day by day. 

7. There were some positive effects of Industrial Revolution also. The introduction of assembly line and factories, electricity development, and the railroads all these things contributed to faster and more efficient production of goods and materials. 

8. Funding of schools and the enactment of child labour laws also came into place. As a result, the Industrial Revolution enhanced both economic production and the new lifestyle of common people.

The result of a Mathematics test is as follows:
80, 90, 70, 80, 80, 60, 80, 70, 90, 65, 100, 60, 70, 60, 70, 85, 65, 70, 70, 85, 90, 60, 65, 80, 60
Make a frequency table for the above data and answer the following questions:
(a) What is the maximum marks obtained?
(b) How many students score less than 75 marks?
(c) How many students scored 80 marks or above?
(d) How many students appeared in the test?
Solution:
From the above information, we have the following table.

(a) Maximum marks obtained by a student = 100
(b) 5 + 3 + 6 = 14 students obtained marks less than 75.
(c) 5 + 2 + 3 + 1 = 11 students scored marks 80 or above 80.
(d) Total 25 students were appeared in the test.