Statistics

Statistics:

The common question that is asked about any new topic is what is the meaning of that topic,similarly let us learn about what is Statistics??Statistics deals mainly in communicating facts and figures in terms of a method called statistical method. Collection, classification, tabulation, representation, reasoning, testing and drawing inferences are part of statistical methods.Rainfall patterns of a particular city over a period of time can be analyzed and a fair estimate about next season can be arrived at, with the help of figures (data) collected over a period of time.

The statistical method of studying a problem broadly consists of the following steps,basically we can get help on the statistical methods by following the steps given below:

* to collect numerical data about the problem,
* to present the collected data systematically,
* to analyze the data and
* to interpret the data and draw conclusions from it.

We have already learnt about the measures of central tendency, the mean, median and mode. Each of these gives a representative value of the data. If we say "the mean of a data is 15", we expect most of the values to be centered around 15. But measures of central tendency don't give us the complete picture. We would want to know how the values are scattered around the mean or the median. In other words, we want to study the variability and define a single number to describe the variability. This number is called the "measure of dispersion". Two of the measures of dispersion are Mean Deviation and Standard Deviation.We can also get help on statistics and probability by learning the statistics formulas.

Hope you like the above example of Statistics.Please leave your comments, if you have any doubts.