Introduction - Prof. Shalabh

[Music] [Music] Hello friends, welcome to the course of Multivit Pros with R Software. My name is Shalabh and I am a professor in the Department of Mathematics and Statistics at the Indian Institute of Technology Kanpur. And in this course I am going to talk to you about all the different types of tools that are related to our statistics. Now the first question that comes to mind is what is this, so just like we have our statistics, Know about statistics, what is statistics or what is statistics, it has a very important role in doing statistical modeling, what is modeling, it is a relationship between our input and output variables, which we try to show through mathematics. Let's try and figure this out using our statistics tools and when we talk about an input and output variable, what happens in that, like if we say I want to know something about a person, We have to tell whether that person is healthy or not. Now the health of any person Does it depend on a single factor, on a single variable or does it depend on many variables i.e. the person's blood pressure, blood sugar, body temperature, apart from this there are many other factors as well, when all those factors are taken into account, then our health condition gets affected by it. If a person's blood pressure is very high, but if his blood sugar level or other variables are under control, will you call him healthy? Probably not. That is why our multivariate procedure Here we are going to understand the different methods of statistics to find out a relation between one output variable and more than one input variable. Now, we are going to understand these different methods of statistics. We have to compute on the basis of our numerical data and calculate them. So, we have many software to calculate them. We are going to use R software in this course. This R software is a free software and you can use it without spending any money. Download it from any of the given R software sites So in this course we will talk about the multivariate procedures of statistics and we will try to show you their implementation through R software. Now what things do you need to do this course? There will be a level of Mathematics, I believe that you must have studied Mathematics at least up to class 10-12 and that is the maximum that we should study. Apart from this, you should have knowledge of R software but one problem is that there are many, many topics in R software, now It is a big challenge for us to understand which topics from the ocean, so for that we will divide some of our R's lex on R software and from there we will try to tell you that Which topics are we going to use further and you can strengthen them by reading them once in your own way. Secondly, from this we expect from you that you have some basic elementary knowledge about statistics. there should be and when we are here Talking about multivariate, what does it mean that before multivariate comes univariate i.e. if we have only one variable or bivariate variable i.e. if we have two variables, till the time we are talking about our statistics related to one variable or two variables Unless we understand the tools, we will not be able to understand multivariate. For this, I have planned this course in such a way that whatever are the minimum tools of statistics that we will need to understand multivariate tools further, we will give them to you in the beginning. We will give you knowledge, we will try to teach you and apart from that we will try to extend it from one variable to two variables and from two variables to the case of multivariate variable. Definitely whatever our statistics is, statistics, whatever we put in it To use mathematical tools, we need a good amount of knowledge of mathematics as well. So here we are going to tell you the way in which you can use this tool. In the course that we are going to handle, I will keep the level of the mathematical proofs of my results very low and I will try to show you only the application part of it, but it is very difficult for us to show the application part. It is necessary that we should know the basic fundamentals of that tool, so this is what I am going to do in this course. First of all, I will tell you about some elementary operations of ART software which we are going to use in the future and also we will learn about our statistics. I will try to give you our elementary concepts in the beginning and I will expect from you that whatever I have explained to you here in a short time, you will either understand it or if you do not understand it, then you should try it yourself to strengthen your knowledge. You can also study from that. After that, I will take you from the same univariate and bivariate procedures to multivariate procedures. So, in this way, we will plan our course and whatever tools we will develop here, we will show them to you. How to compute them in your R software And here we will also try to understand how to read the output that we will get by giving input to the R software. So with all these things in mind, let us start our multivariate procedure from the next lecture. And before this I hope that you will once revise the preliminary concepts of status about your AR software, so let's meet you again in the next lecture where we will discuss our multiway procedure with AR software Good bye till the course starts