 Hello and welcome to the session. In this session, we'll discuss a question which says that studying a given graph that is this graph and answer the given questions, first is in which year did the average income reach its highest point? Second part, in which year did the average income reach its lowest point? Third part, how much more did the average person earn in the year 2009 than in the year 2008 and fourth part is what is the range of the data? Now before starting the solution of this question, we should know some results. In a bar graph, the height of the bar to the frequency of the distribution and the second is the range of the data, the difference between the highest and the lowest. So these results will work out as a key idea for solving out the given question. And now we will start with the solution. Now in the graph, we are given the average income of the person in a particular year in 1000 dollars and each bar is raised according to the average income in that particular year. Here we can see that in the year 2004, the bar reaches the point 50, the income of the person in 2004 is, we can see that the income of the person in the year 2005 is 70,000 dollars. In the year 2000 dollars, the average income of a person is 2008, it is 3000 dollars, the average income of a person. Now in the first, it is asked that in which year did the average income reach its highest point? Now we have to give the year in which the average income reached its highest point. Now on comparing all the bars, the highest bar, it reaches the point 71, we can write that in the year 2000 dollars income of a person reached, we have to find that in which year did the average income reach its lowest point? In which the average income was minimum? Now out of all the bars, the bar of 2008 is the smallest that 8 reaches to the point 30. In the year 2008, the average income of a person is the lowest among reached. Now in the third part, it is asked and earned in the year 2009, then in the year 2000, now from the graph you can see that in the year 2009, the bar reaches to the point 40 and in the year 2008 it reaches to the point 30, which means the average income of a person in the year 2008 is 3000 dollars and in the year 2009, the average income of a person is 3000 dollars. The average income of a person in 2008 is 3000 dollars and in the year 2009 it is 4000 dollars. Now the difference between these two amounts is 1000 dollars minus 1000 dollars. In the fourth part, we have to find the range of the data. Now we know that the range of the data is the difference between the highest and the lowest value. The range of this given data is the difference between the highest and lowest average income. Now in the first and second part of the given question, we have found the years in which average income was highest and lowest. The average income was lowest, we can see that in the year 2005, 70,000 dollars and in the year 2008, the average income of a person is 3000 dollars. The highest average income is equal to 17,000, the lowest is equal to 1000 dollars. So the range of the given data is equal to the highest value, lowest average income minus the lowest average income which is equal to 70,000 dollars minus 1000 dollars. So this is the solution of the given question and that's all for this session. Hope you all have enjoyed this session.