1. Decide if you will use the control value for the center line on the Levey-Jennings chart or if you will use the average calculated from the results of running the control in the lab test.

Putuskan apakah Anda akan menggunakan nilai kontrol untuk garis tengah pada grafik Levey-Jennings atau jika Anda akan menggunakan rata-rata dihitung dari hasil menjalankan kontrol dalam tes laboratorium.

2. Decide if you have a known standard deviation for the lab test or if you will use the calculated standard deviation from the results from running the control in the lab test.

3. Select the frequency with which the data will be collected (e.g., before each test or daily). Data should be collected in the order in which they are generated.

4. Select the number of data points (k) to be collected before control limits are calculated (at least twenty). You can start the chart with as little as six points. Recalculate the control limits until you have twenty or more points. The more data points you have, the better the estimate of the variation in the lab test.

5. Run the control in the lab test and record the individual results.

6. Plot the results (X) on the Levey-Jennings chart.

7. Calculate the overall process average (if the control value is not being used for the center line):1.Decide if you will use the control value for the center line on the Levey-Jennings chart or if you will use the average calculated from the results of running the control in the lab test.

2. Decide if you have a known standard deviation for the lab test or if you will use the calculated standard deviation from the results from running the control in the lab test.

3. Select the frequency with which the data will be collected (e.g., before each test or daily). Data should be collected in the order in which they are generated.

4. Select the number of data points (k) to be collected before control limits are calculated (at least twenty). You can start the chart with as little as six points. Recalculate the control limits until you have twenty or more points. The more data points you have, the better the estimate of the variation in the lab test.

5. Run the control in the lab test and record the individual results.

6. Plot the results (X) on the Levey-Jennings chart.

7. Calculate the overall process average (if the control value is not being used for the center line):