 Hi and welcome to the session. Today we will learn about data handling. So first of all let us learn what is data. Data is a collection of numbers gathered to give some information. For example, here is the data showing the number of children in twenty families in a colony. So according to this data there are two children in first family. There is one child in second family, three children in third family and so on. Now let's see how to arrange the given data in the form of a table using telemarks. So here in the table in first column we will take number of children in a family. In second column we will make telemarks and in third column we will take number of families. So first of all let us take number of children as one and let's see how many families have one child. One, two, three, four, five. So that means five families have one child. Now first of all we will make the table for number of children and number of families and at last we will learn how to represent number of families using telemarks. Now let's take number of children as two and let's see how many families have two children. One, two, three, four, five, six and seven. So seven families have two children. Now let's take number of children as three and let's see how many families have three children. One, two, three, four, five, six. So six families have three children. Now at last we have number of children as four and there are just two families having four children. Now here we are given that there are twenty families. So on adding all these numbers we should get twenty. Also we have five plus seven plus six plus two is equal to twenty. Now let's see how to represent number of families by telemarks. So first of all we have five families. So this represents five. Next we have seven families. So we have five plus two that is seven. Next there are six families. So we have five plus one, six and at last there are two families. So we have two. So we have learnt how to arrange the data in a table using telemarks. Now let's move on to our next topic pictograph. A pictograph represents data through pictures of updates. Also it helps answer the questions on the data at a glance. For example the following pictograph shows the number of computers sold by a shopkeeper on the following days. This symbol represents five computers. That means if we want to calculate that how many computers were sold on Monday then we need to count these pictures. Here there are four pictures that means number of computers sold on Monday is four into five that is twenty computers. Now suppose by looking at this pictograph we need to answer few questions such as day on which maximum number of computers were sold. Now here by looking at this pictograph we know that on Friday there are maximum pictures that means maximum number of computers were sold on Friday. And the day on which minimum number of computers were sold that will be Thursday because there is just one picture that means on Thursday minimum computers were sold. Now let us learn how to draw a pictograph. Now suppose we want to draw the pictograph for the given data. Now here we have given number of students in different sections of class six. So here we have section and number of students. First of all let us suppose that this picture represents ten students and this picture represents five students. Now we have section A and there are thirty students in section A. So thirty will be represented by three pictures of ten students like this. Now in section B there are forty five students. So first of all we have ten then ten more we have twenty by this we have thirty now forty and now we want five more. So here we have five. So this represents forty five students. Next we have section C and in section C there are twenty five students. So let us represent twenty five. So here we have twenty five students. Lastly in section B there are forty students. So this represents forty. So this is our required pictograph. And now by just looking at this pictograph we can make out that their maximum number of students in section B and there are minimum number of students in section C. With this we finish this session. Hope you must have understood all the concepts. Goodbye, take care and have a nice day.