Line Diagrams: This kind of a diagram becomes suitable for representing data supplied chronologically in an ascending or descending order. 3. This is especially important in scientific abstract preparation where space is limited. It is in itself enough to show how important the science of statistics is. Further, graphs of statistical data clearly bring out the relative importance of different figures, the trend or tendency of the values of the variables involved can be studied too. We can make comparison between different samples very easily. Diagrams and Graphs of Statistical Data We have discussed the techniques of classification and tabulation that help us organize the collected data in a meaningful fashion. A diagram is a symbolic representation of information using visualization techniques. Some very important assumptions were made, calculations were … The Diagram translates all the information and helps us to plan for the next. However, there are many other uses of Venn diagrams that you can take advantage of during your daily routines. 2. 3. II. 2. Simple Bar diagrams – These diagrams represent only one particular type of data. Statistics play an important role in research of almost any kind because they deal with easily-quantified data. An ogive graph is a plot used in statistics to show cumulative frequencies. The power of Venn diagram lie in its simplicity. The word graph is sometimes used as a synonym for diagram. We don’t have to use any statistical technique further to compare. Importance or utility of Diagrams. It allows us to quickly estimate the number of observations that are less than or equal to a particular value. Even a layman can understand it very easily and in a short time. Subdivided Bar diagram or Component Bar diagram – These diagrams present total values and parts in … These diagrams act like a roadmap which guide the viewer. Bar diagram 1. Diagrams give a very clear picture of data. The standard score (more commonly referred to as a z-score) is a very useful statistic because it (a) allows us to calculate the probability of a score occurring within our normal distribution and (b) enables us to compare two scores that are from different normal distributions. Importance and Scope of Statistics: The fact that in the modern world statistical methods are universally applicable. It is a fundamentally different approach to analyzing data. Multiple Bar diagrams – These diagrams represent more than one type of data at a time. Venn diagrams are commonly associated with education. 13. They are frequently used in mathematics to understand set theory and also used to do various comparisons in the classroom. Important statistics such as mean, median, standard deviation, confidence intervals, and p values can be emphasized in this manner, or set apart in a summary row or column. Scope and Importance of Statistics: 3. Sometimes, the technique uses a three-dimensional visualization which is then projected onto a two-dimensional surface. When working in fields such as science or medicine, trials are needed, and experimental data has to be collected and analyzed. The data may be presented in the form of a graph, diagram or through an average, or coefficients etc. However, this way of presenting statistical data does not always prove to be interesting to a layman. For example, we cannot know the price position from individual prices of all good, but we can know it, if we get the index of general level of prices. A recent trend in statistics has been the use of exploratory data analysis. Diagrams have been used since ancient times on walls of caves, but became more prevalent during the Enlightenment. 14. Historically, statistics were used to confirm final conclusions about data. Standard Score. Roadmap • The amount of information can be overwhelming sometimes. • The initial diagrams are always a good reference point – a good reminder of the most important aspects on a project.