Descriptive vs inferential statistics statistics is the discipline of collection, analysis, and presentation of data theory of statistics is divided into two branches on the basis of the information they produce by analyzing the data. Inferential statistics we have seen that descriptive statistics provide information about our immediate group of data for example, we could calculate the mean and standard deviation of the exam marks for the 100 students and this could provide valuable information about this group of 100 students. To understand the simple difference between descriptive and inferential statistics, all you need to remember is that descriptive statistics summarize your current dataset and inferential statistics aim to draw conclusions about an additional population outside of your dataset. Statisticslecturescom - where you can find free lectures, videos, and exercises, as well as get your questions answered on our forums.
The difference between descriptive and inferential statistics can be drawn clearly on the following grounds: descriptive statistics is a discipline which is concerned with describing the population under study. The complete excel 2007: business statistics course has a total duration of 4 hours and 19 minutes and covers formulas and functions for calculating averages and standard deviations, charts and.
Both descriptive and inferential statistics help make sense out of row after row of data use descriptive statistics to summarize and graph the data for a group that you choose. With inferential statistics, you are trying to reach conclusions that extend beyond the immediate data alone for instance, we use inferential statistics to try to infer from the sample data what the population might think.
Video created by university of london for the course statistics for international business in our study of statistics, we learn many methods to help us summarize, analyze, and interpret data with the aim of making informed decisions in an. Inferential statistics author(s) mikki hebl and david lane prerequisites descriptive statistics learning objectives distinguish between a sample and a population. Spss: descriptive and inferential statistics 3 the division of statistics + scientific computation, the university of texas at austin this tutorial describes the use of spss to obtain descriptive and inferential statistics. Descriptive statistics is the type of statistics that probably springs to most people's minds when they hear the word statistics in this branch of statistics, the goal is to describe numerical measures are used to tell about features of a set of data.
Descriptive statistics is the term given to the analysis of data that helps describe, show or summarize data in a meaningful way such that, for example, patterns might emerge from the data they provide simple summaries about the sample and the measures. Statistics is a major branch of mathematics and deals with the study, classification, analysis, and representation of data the null hypothesis statement is an important statistical procedure that is used to define the relationship between two quantities. Inferential statistics techniques that allow us to study samples and then make generalizations about the populations from which the samples were selected (infer.
Both descriptive and inferential statistics rely on the same set of data descriptive statistics rely solely on this set of data, whilst inferential statistics also rely on this data in order to make generalisations about a larger population. Descriptive and inferential statistics each give different insights into the nature of the data gathered one alone cannot give the whole picture. Statistics is concerned with developing and studying different methods for collecting, analyzing and presenting the empirical data the field of statistics is composed of two broad categories- descriptive and inferential statistics.
Types of inferential statistics there are many statistical procedures used to test null hypotheses, and they all a best suited for specific research situations and types of data below is a table that lists some of the more commonly used statistical procedures. Both descriptive and inferential statistics have their benefits and shortcomings descriptive statistics are great for a small population you can accurately produce numbers for the population without worrying about being off or making any errors, but you can't make any conclusions that go beyond the population that you have. Online shopping from a great selection at books store. Summarizes, and presents data is called descriptive statistics for example, this is what you would use if you'd been collecting data about a process and you summarize it graphically and numerically to explain it to your supervisor.