The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below:

(i) Represent the information above by a bar graph. (ii) In the classroom discuss what conclusions can be arrived at from the graph.

The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: (i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165,165-170, etc. (ii) What can you conclude about their heights from the table ?

25% of the students in a school are girls and others are boys. Form an equation and draw a graph for this. By observing the graph, answer the following : (i) Find the number of boys, if the number of girls is 25. (ii) Find the number of girls, if the number of boys is 45. (iii) Take three different values for number of boys and find the number of girls. Similarly take three different values for number of girls and find the number of boys?

Given below are the seats won by different political parties in the polling outcome of a state assembly elections : (i) Draw a bar graph to represent the polling results. (ii) Which political party won the maximum number of seats?

A circus wishes to develop a new clown act. Fig. (1) shows a diagram of the proposed setup. A clown will be shot out of a cannot with velocity v_(0) at a trajectory that makes an angle theta=45^(@) with the ground. At this angile, the clown will travell a maximum horizontal distance. The cannot will accelerate the clown by applying a constant force of 10, 000N over a very short time of 0.24s . The height above the ground at which the clown begins his trajectory is 10m . A large hoop is to be suspended from the celling by a massless cable at just the right place so that the clown will be able to dive through it when he reaches a maximum height above the ground. After passing through the hoop he will then continue on his trajectory until arriving at the safety net. Fig (2) shows a graph of the vertical component of the clown's velocity as a function of time between the cannon and the hoop. Since the velocity depends on the mass of the particular clown performing the act, the graph shows data for serveral different masses. The slope of the line segments plotted in figure 2 is a figure constant. Which one of the following physical quantities does this slope represent?

In a particular section of Class IX, 40 students were asked about the month of their birth and the following graph was prepared for the data so obtained : Observe the bar graph given above and answer the following questions: ( i ) How many students were born in the month of November? (ii) in which month were the maximum number of students born ?