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Importance and Scope of Statistics: The fact that in the modern world statistical methods are universally applicable. Multiple Bar diagrams – These diagrams represent more than one type of data at a time. The power of Venn diagram lie in its simplicity. 13. We can make comparison between different samples very easily. Venn diagrams are commonly associated with education. It is in itself enough to show how important the science of statistics is. • The initial diagrams are always a good reference point – a good reminder of the most important aspects on a project. Scope and Importance of Statistics: However, there are many other uses of Venn diagrams that you can take advantage of during your daily routines. A diagram is a symbolic representation of information using visualization techniques. Sometimes, the technique uses a three-dimensional visualization which is then projected onto a two-dimensional surface. 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. 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. Even a layman can understand it very easily and in a short time. 14. 2. An ogive graph is a plot used in statistics to show cumulative frequencies. Simple Bar diagrams – These diagrams represent only one particular type of data. A recent trend in statistics has been the use of exploratory data analysis. Statistics play an important role in research of almost any kind because they deal with easily-quantified data. They are frequently used in mathematics to understand set theory and also used to do various comparisons in the classroom. The word graph is sometimes used as a synonym for diagram. 3. Roadmap • The amount of information can be overwhelming sometimes. 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. However, this way of presenting statistical data does not always prove to be interesting to a layman. 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. Historically, statistics were used to confirm final conclusions about data. This is especially important in scientific abstract preparation where space is limited. Line Diagrams: This kind of a diagram becomes suitable for representing data supplied chronologically in an ascending or descending order. Bar diagram 1. We don’t have to use any statistical technique further to compare. Some very important assumptions were made, calculations were … Subdivided Bar diagram or Component Bar diagram – These diagrams present total values and parts in … Diagrams have been used since ancient times on walls of caves, but became more prevalent during the Enlightenment. The Diagram translates all the information and helps us to plan for the next. These diagrams act like a roadmap which guide the viewer. II. Importance or utility of Diagrams. The data may be presented in the form of a graph, diagram or through an average, or coefficients etc. 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. 3. It is a fundamentally different approach to analyzing data. It allows us to quickly estimate the number of observations that are less than or equal to a particular value. 2. Diagrams give a very clear picture of data. When working in fields such as science or medicine, trials are needed, and experimental data has to be collected and analyzed. Standard Score. 3.