The following table shows participation in various recreational activities by students of a class during the summer holidays.
`{:("Recreational activity","Swimming","Painting","Cycling","Dancing"),("Number of students",27,9,15,21):}`
if we represent these values in the form of a pie chart, then find the central angle of the sector representing dancing.

The following table shows various sports played by students in a school. {:("Sport","Football","Volleyball","Badminbton","Chess"),("Number of students",68,34,56,42):} If we respresent these value in the form of a bar graph, then the height of the bar corresponding to football is 13.6 cm. Find the difference between the height of the bars corresponding to volley ball and badminton.

The following table shows the number of students in various classes in different school activities. Represent the above data by a pie chart.

The following table shows various sports played by students in a school. Draw a pie chart to represent the given data. {:("Sports","Chess","Cricket","Carroms","Football"),("Number of students",35,70,42,63):}

Following table gives marks in Statistics of the students of a class. Find out mean marks. {:("Mid-value",5,10,15,20,25,30,35,40),("Number of Students",5,7,9,10,8,6,3,2):}

The given table shows the number of students participating in various activities in a school. From the above information one student is chosen. Find the probability that the student participates in games.