A bar graph is only a vertical axis shows the "frequency" of information lie a seafloor properties of what we are interested by order to view the variance of the process by observing the shape of the histogram that is based on the information provided by the sample. Useful in order to make the distribution of what we want the analysis. Benefits of using hit grown GSM is used to analyze the frequency of data and then decide whether the distribution or distribution data to verify the properties of the data, as well as to estimate the characteristics of quality of production. Histogram chart This chart indicates that there are deviations to the features of a Bell upside down. (Normal Distribution), or if there is a deviation to the positive or negative or a tooth saw or a cliff, etc.
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