Showing posts with label Predictions from data. Show all posts
Showing posts with label Predictions from data. Show all posts

Friday, 4 May 2012

Predictions from data

Previously we have discussed about integration worksheets and In today's session we are going to discuss about Predictions from data which comes under cbse 10th syllabus, Data prediction is an important concept based on some previous data that helps in decision making, So for data is collected and represented in the way that anyone can easily understand that data for predicting the future decision. It is the only way by which any one can easily and efficiently makes the effective plans or strategies that are totally based on the previously stored data in the specified format. Before making any predictions from data it should be noted that how data stored and collected as well as from where data is collected for future prediction.
Data should collect correctly as well as from the true resources within the specified time means at the time data is needed by someone it can be easily retrieved by them and after collection of the data it should be organized properly. For representing the series as like time related to temperature or rainfall or population growth or birth and death rates line graphs are drawn that also helps in data prediction. Polygraph is also a line graph in that two or more than two variables are shown on a same diagram by different line. These diagrams are also used for show the birth and death rates and also used for showing the growth rate of different crops.
After all the collection and organization of the data there is next important concept is representing the data. It is the only concept through which the user can understand the previously recorded data and makes some decision on that .Collection and representation of data in probability are also helpful to make the future strategies as well as helps in comparison of the data among several years for the same period of time.
There are several methods and various type of data representation like image processing , Global positioning system .The main motive behind display  of the data is to understand the available data and deriving the meaning and also extract the useful in conclusion .So Predicted Probabilities are helpful in growth of the organization.
In the next session we will discuss about Statistical methods to make inferences
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Thursday, 19 April 2012

Organization and display of data

When an experiment is done then all the data related to that experiment that is used for future prediction and for comparison between the data of different time of that experiment then there will be need of Organization and display of data. It will help in making the efficient and effective plan that is based on the organized data and also helps in making strategies for future that are totally base on the previously stored data .Before storing the data it should be keep in mind that how data is organized and also from where data is collected . (know more about cbse text books, here)
Data should organize correctly and it will be presented in the manner that everyone can easily understand it means and also presentation of the data must be in timely manner that means when data is needed by the user it will be available to him / her on that particular time not after so much delay and also keep in mind when data is needed by someone it can be easily retrieved by them and after collection of the data it should be organized according to some keys.
After all the organization of data there will be next very important concept of display the data. It is the only way that helps the user to understand the previously recorded data and also helps in making of some decision that based on that particular recorded data. Organization and display of data in probability is also helpful to make the future strategies and also helps in comparison of the data.
Data representation has many ways like image processing, Global positioning system. Display of data is used to understand the data and deriving the meaning for conclusion .The representation of data can be done in many ways like Statistical tables, rank order, frequency order.

In the next session we will discuss about variance