 Hello and welcome to the session. In this session we will discuss a question which says that in 1940s scientists discovered how to create rain in times of drought. This technique is called cloud seeding. To test how the technique works in causing rain, 25 clouds were seeded. The amount of rain fall from each cloud was measured and recorded in acre feet. The following observations were recorded. Now we want to form a dot plot for this data. Now let us start with the solution of the given question. Now we have given the rain fall in 25 seeded clouds in acre feet. First of all let us arrange this data in ascending order so that it is easy to form a dot plot for this data. Now arranging the given data in ascending order we have 0, 0, 50, 50, 50, then 100, 100, 100, 100, then 150, 200, 200, then 250, 250, 250, then 300, 350, 500, 1000, 1650, 1700 and 2750. Now here we have drawn a number line of this data. The observations are from 0 to 2750 and these are long values. So here we have taken scale of 500 and we have written here 0, then 500, then 1000, 1500, 2000 and 2500. Since the observations are the amount of rain fall in acre feet, so we have labeled this number line as rain fall in acre feet and now we will put a dot for each observation. Now here the observation 0 is repeated 2 times, so we place 2 dots here, one above the other at point 0 on the number line, then the observation 15 is repeated 3 times, so we put 3 dots one above the other at the point 50 on the number line. Similarly we put the dots for all the observations thus we get vertical dot bars in the graph. Now let us see a title to this graph as seeded clouds and this is the required dot plot for this given data and this completes our session. Hope you all have enjoyed the session.