 Hello and welcome to the session. In this session we are going to discuss the following question and the question says that discuss the center and spread for the following graph. Now let us start with the solution of this question. Now here we are given a graph showing curves for two different data sets. Here pink curve shows one data set and green curve shows another data set. And here we can see that the two curves are symmetric. Here the center of the pink curve will lie at the highest point and here we have seen that this is the peak point of the pink curve and its center lies at this point. And we can also see that the curve is symmetric about its mean and let us denote its mean by x1 bar. Similarly the center of the data set represented by green curve will lie at the highest point. So here we can see that the center of this curve lies at the highest point and the curve is symmetric about its mean. Let us denote its mean by x2 bar. So here we see that centers of the two data sets are different. Now we shall discuss its spread and we know that the standard deviation is the measure of how spread out the data is. It indicates the average distance from the mean for the set of values greater standard deviation shows more distance from the mean for the set of values. When we compare the two curves we see that the spread of the two curves is not so wide and here we can see that it is almost clustered about their means also we see that the spread of the two curves is same. So we can say that the two curves show same standard deviation thus we can say that the two data sets have different centers but same spread which is the required answer. This completes our session. Hope you enjoyed this session.