A quality improvement project was initiated in an industry that has seasonal demand for their product, coolers/ice chests, which
are purchased/sold more frequently in the summer. The goal of the project is to increase sales. The project has reached the point where the team is developing their baseline measurement. Depicting a baseline measurement for this project is best facilitated by which quality improvement tool?A.HistogramB.Pareto chartC.SIPOC diagramD.Run chart
Histogram is nothing but the diagram formed of rectangles in a graphical form representing the distribution of numerical data. The strength of histogram is that the picture of location and variation of data set can be read easily as the individual data are grouped together to give clear picture of occurrence of frequency data in each class in the data set.
A histogram is a visual representation of the data clustered in intervals. The data were extracted from quantitative variables. A histogram is used to obtain an understanding of the distribution of data or samples. Qualitative data can also be used but the amount of data must be large. This type of graph plots rectangular vertical bars with a proportional height of the intervals they cover.
Therefore, <em>the project in the example can use a histogram to portrait its level of sales through the different seasons.</em>
A common-cause variation shows changes because of unknown reasons within a series of undifferentiated produced items. The method aims to measure the accuracy of the manufacturing process given expected factors that could bring fluctuations in the output. Common-cause variations can be attributed to natural reasons such as employees' fatigue or distraction.
