#statistics basics

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Master Statistics 101: Correlation

What is Correlation? Correlation indicates that as one variable changes in value, the other variable tends to change in a specific direction. For example, the height and weight of an individual can be correlated – which means if the person’s height is on the taller side of the curve, the weight would also be high. What is Correlation?What are correlation coefficients?Pearson’s correlation…

Master Statistics 101: Correlation

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History of Statistics and its basics

Hello students. In mathematics the statistics plays a great role. Many of the statistics applications are used in various fields such as business, education, accounting, social science and many more. The history of statistics has a great theory within it. This is started in about 1749; this word means collection of information in a proper manner. In every century the meaning of statistics has been expanded, slowly it induces many data definitions, summarized data and tools. The term statistics came from the Latin word Statisticum Collegium which means council of state with the Italian word Stattista that means politician. But it was first brought forward by the German Statistik the name was Gottfried Achenwall in 1749. He produced the data analysis about the every state. Some founders of the statistics are below :-

-John Graunt (English 1620 – 1674 )

-Thomas Bayes (English 1702 – 1761 )

-Thorvald N. Thiele (Danish, 1838 - 1910)

Actually the list is very big so it is not possible to describe all founders here. They all were so much dedicated for the statistics and spent almost whole life to expanding statistics. The main aim to introduce the statistics is to provide support to the government centers. The whole history of the statistics contains many controversies and volumes.

Statistics basics include some terms and terminologies. They are : -

-Data and variable :- A data is raw fact and figures related to any field. And variable is the Representative for any field, in this we can take many different values.

-Measurement scale : - In measurement scale we measure the data and variables information according to their type and requirement. (know more about icse board, here)

Mean, median, mode, standard deviation normality correlations, t – test for dependent and independent variable, frequency tables and many more are the statistics basics.

In the next session we are going to discuss Statistics and Sampling.