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    • 1. a sheet of information in the form of a table, graph, or diagram: "a chart showing how much do-it-yourself costs compared with retail" Similar graphtabletabulationgrid


  2. The mean chart can be used for a characteristic that can be measured on a continuous scale. and can also be used along with the which monitor the range of the successive samples. For example, the mean chart or can be used to measure whether the thickness of the iron sheet is within the lower control limit and upper control limit.

  3. In statistical process control(SPC), the x¯{\displaystyle {\bar {x}}}and R chartis a type of scheme, popularly known as control chart, used to monitor the mean and range of a normally distributed variables simultaneously, when samples are collected at regular intervals from a businessor industrial process.[1]

    • Average quality characteristic per unit
    • Walter A. Shewhart
    • 1 < n ≤ 10
    • Variables data
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  5. Mean and median Statistics intro: Mean, median, & mode Mean, median, & mode example Calculating the mean Calculating the mean Calculating the median Calculating the mean: data displays Calculating the median: data displays Math > 6th grade > Data and statistics > Mean and median Calculating the mean: data displays

  6. What is the mean of a bar graph? The mean is also called the average. To find the mean, we’ll need to: 1. Add all the numbers. The numbers in this example are 2, 5, 3, 4, 1 2. Divide the sum by the number of addends. The number of addends in this example are 5. Here’s how to work out the mean of our example: 2 + 5 + 3 + 4 + 1 = 15 15 / 5 = 3

  7. The X-bar chart shows how the mean or average changes over time and the R chart shows how the range of the subgroups changes over time. It is also used to monitor the effects of process improvement theories. As the standard, the X-bar and R chart will work in place of the X-bar and s or median and R chart.

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