Quantitative analysis is the method to measurement a complicated case by assigning a numerical value to variables, build a model and further evaluate the potential outcomes and case performance through mathematical and statistical calculation. - Draw a cause-effect fish bone diagram to identify key parameters or dominate variables
- Do the market survey and see if the market survey does agree with the identified variables.
- Plot the each data distribution and figure out what’s the largest population pool.
The statistical distribution could be normal, binominal, exponential or other kind of distribution shape. Base on the distribution we can figure out what’s the standard deviation (sigma). Using Weibull analysis to understand a more complicated distribution shape.
Figure out the dependency and correlation between variable and the outcome.
Sometimes variables are not independent from each others. Besides, different parameters mixed up together could have accumulate or negative effect. Factor relationship from 3 or more test groups can be revealed by ANOVA (Analysis of Variance). Linear regression analysis under normal or log normal scale can also easily find out the correlation from two variables (one to the other).
Build Mathematical Model
After understand all the correlation between variables and the affect to the outcome, we can further build the model for the future outcome prediction. Comparing with the actual result and we can further fine tune the module and make forecast with better accuracy.
To understand quantitative analysis, first we need to get familiar with statistical terms. Here is the website that is quite helpful
http://www.animatedsoftware.com/statglos/statglos.htm#index
Actually Microsoft EXCEL also provide basic and intermediate level quantitative tools. Such as Linear Regression Analysis and ANOVA analysis
http://www.cba.nau.edu/allen-d/Excel%20Regression%20Tutorial/excel_regression_tutorial.htm
http://www.aspfree.com/c/a/Microsoft-Access/TwoWay-ANOVA-Analysis-of-Variance-in-Microsoft-Excel/
If you do not feel dizzy yet after reading the article, following are some commercial softwares about statistical analysis.

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