This is in continuation of our series of article on reporting tools that can help us in reporting activity.
Run Charts
Run chart is composed of a group of data (observation) in sequential order demonstrating shifts or movement in the central tendency (average). Before a control chart is developed, run chart is used first to monitor a process through measuring or tracking events or observation within a certain time in sequential order. This technique can provide data to control charts after a process has been stabilized or has matured. This technique is helpful when tracking changes or trends in a process to better understand and identify the dynamics of a process.
Scatter Plot Diagrams
A scatter plot diagram illustrates the connection that might exist among two variables or factors. This technique is used to test how one variable influences the responses or factors. This tool is used for problem solving and understanding the cause and effect relationships. It is often referred to as “correlation” diagram, and the pattern of the plots will reveal correlation (positive, negative, linear, random, curvilinear, or cluster) on a given variables or factors.
Regression Analysis
Regression Analysis is used in analysis to graphically show the relationship between two variables and the correlation between them, or how closely they’re related. For instance, the effect of the software size and memory usage can affect performance and cost. Also, through this technique, the analyst can determine the cause of some undesired event/result by developing correlations between multiple variables.
Multivariate Analysis
Multivariate Analysis is used to show the relationship between two variables. “Exploratory graphics” concept is used in this analysis because many times the graphical information created is not enough or useful in identifying areas for further analysis. The results for Exploratory graphics must be established through more investigation for them to be qualified and be used in presentations and reports. This technique requires advanced statistical packages to perform underlying analysis, in most cases, regression statistics are used in this technique to produce the information required for multi-variable graph.
Control Charts
Control chart is a technique used to assess the distinction of a process and to determine the enhancement and improvement needed, monitor a constant repeatable process, and maintain the stability of a process. The types of variation that are being observed are: a) common or random; and b)special or unique events.
Control Chart is a serious business as it indicates the process is thought to be out of control. Team Brainstorming, Pareto Analysis, Cause and Effect diagrams are also used here to better understand the problem. Example: Defects found in Systems Development Life Cycle.