In an ancient lake bed at Southern Hemisphere scientists studying fossil leaves found out the mechanism of the plants living during the Miocene Epoch in which the world used to have an elevated level of carbon dioxide in the atmosphere. It gives a hope that with an increased rate of …

Range The range consists of a group of knowledge which shows the difference between the highest and lowest values within the data set. So as to seek out the range, it is necessary to first order the data from least to greatest. Then  we have to subtract the smallest value from …

There are two main methods of presenting data of a variable character or a variable. A) Tabulation/Tabular Presentation B) Drawing/Graphical Presentation Tabulation Tabulation are devices for presenting data from a mass of statistical data. Preparation of frequency distribution table is that the first requirement. Tables are often simple or complex …

Average  Average value of a characteristic is the one central value around which all other observations are dispersed.In any large series, nearly 50% observations lie above while other 50% lie below the central value.It indicates how the values lie near the centre. **Average is the measure of central tendency or …

Statistics Statistics is defined as a body of methods for making reasonable and wise decisions in the face of uncertainty. These are used in the analysis of numerical data of various aspects including interpretation of data on the basis of certain statistical principles. Statistics is a field of study concerned with …

Population In statistics, a population is a set of similar items or events which is of interest for some question or experiment. Characteristics Population is a huge material. Population may be infinite or finite. If a population consists of fixed number of values, it is said to be finite. If …