Analyzing numerical data validating identification numbers Free chat online hamature
The data are necessary as inputs to the analysis, which is specified based upon the requirements of those directing the analysis or customers (who will use the finished product of the analysis).The general type of entity upon which the data will be collected is referred to as an experimental unit (e.g., a person or population of people).Predictive analytics focuses on application of statistical models for predictive forecasting or classification, while text analytics applies statistical, linguistic, and structural techniques to extract and classify information from textual sources, a species of unstructured data. Data integration is a precursor to data analysis, Analysis refers to breaking a whole into its separate components for individual examination.Data analysis is a process for obtaining raw data and converting it into information useful for decision-making by users.Data are collected and analyzed to answer questions, test hypotheses or disprove theories.Statistician John Tukey defined data analysis in 1961 as: "Procedures for analyzing data, techniques for interpreting the results of such procedures, ways of planning the gathering of data to make its analysis easier, more precise or more accurate, and all the machinery and results of (mathematical) statistics which apply to analyzing data." The CRISP framework used in data mining has similar steps.
For instance, these may involve placing data into rows and columns in a table format (i.e., structured data) for further analysis, such as within a spreadsheet or statistical software.
Once the data are analyzed, it may be reported in many formats to the users of the analysis to support their requirements.
The users may have feedback, which results in additional analysis.
In mathematical terms, Y (sales) is a function of X (advertising).
It may be described as Y = a X b error, where the model is designed such that a and b minimize the error when the model predicts Y for a given range of values of X.