18. The number of defects found in 25 samples of 100 Malossdientes Candy Company lemon drops taken on a daily basis from a production line over a five- week period is given in the worksheet Prob. 9-18. a. Compute dpmo and find the sigma level. b. Plot these data on a run chart. Can you identify any special causes?  C.  Explain what the Sigma Level means below:

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Chapter2: Introduction To Spreadsheet Modeling
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18. The number of defects found in 25 samples of 100 Malossdientes Candy Company lemon drops taken on a daily basis from a production line over a five- week period is given in the worksheet Prob. 9-18.

a. Compute dpmo and find the sigma level.

b. Plot these data on a run chart. Can you identify any special causes? 

C.  Explain what the Sigma Level means below:

**Title: Understanding Sigma Value Calculations in Quality Control**

---

### Calculation of Sigma Value

**Instructions:**

1. Click the yellow cell, then click on “ƒx” button above. Select “Statistical” from the dialog drop-down. Scroll down to find statistical selections. Find and select “NORM.S.INV.” dialog box will open. Type in the following info: “Probability text box: .99865).” Click OK. (See explanation to the right)
2. In the line level, type in the standard sigma shifts (.0845)
3. Sigma Level [value] will auto-calculate. Explain what the Sigma Level means.

---

**Data Entry Table:**

- **Number of Samples:** 25
- **Sample Values:**
  - Sample Numbers: 1 to 25
  - Defects: 6 (for samples 1-25)
  - Center: 5.98 (for samples 1-25)

---

### Explanation of Chart:

**Chart Type:**

- Line Chart

**Data Represented:**

- X-axis: Sample Numbers (1-25)
- Y-axis: Defect Counts

---

**Chart Description:**

- This chart compares the number of defects against the sample numbers.
- The blue line represents the actual number of defects encountered.
- The red line marks the center, which is a constant value of 5.98 across all sample numbers.
- The line graph shows fluctuations in defect numbers around the center value, with some peaks and troughs indicating variations over the 25 samples.

---

**Instructions for Analysis:**

- Analyze chart data; do not describe the chart.
- Analyze and explain what the chart data reveals.
- Incorporate analysis of data, and your response to the problem questions in the text, in a narrative format using the Report Template.

---

**Note:** 

The reason for using the equation is to identify the probability of finding a value between 1,000 and the distribution mean (0.99865 or 5.98).
Transcribed Image Text:**Title: Understanding Sigma Value Calculations in Quality Control** --- ### Calculation of Sigma Value **Instructions:** 1. Click the yellow cell, then click on “ƒx” button above. Select “Statistical” from the dialog drop-down. Scroll down to find statistical selections. Find and select “NORM.S.INV.” dialog box will open. Type in the following info: “Probability text box: .99865).” Click OK. (See explanation to the right) 2. In the line level, type in the standard sigma shifts (.0845) 3. Sigma Level [value] will auto-calculate. Explain what the Sigma Level means. --- **Data Entry Table:** - **Number of Samples:** 25 - **Sample Values:** - Sample Numbers: 1 to 25 - Defects: 6 (for samples 1-25) - Center: 5.98 (for samples 1-25) --- ### Explanation of Chart: **Chart Type:** - Line Chart **Data Represented:** - X-axis: Sample Numbers (1-25) - Y-axis: Defect Counts --- **Chart Description:** - This chart compares the number of defects against the sample numbers. - The blue line represents the actual number of defects encountered. - The red line marks the center, which is a constant value of 5.98 across all sample numbers. - The line graph shows fluctuations in defect numbers around the center value, with some peaks and troughs indicating variations over the 25 samples. --- **Instructions for Analysis:** - Analyze chart data; do not describe the chart. - Analyze and explain what the chart data reveals. - Incorporate analysis of data, and your response to the problem questions in the text, in a narrative format using the Report Template. --- **Note:** The reason for using the equation is to identify the probability of finding a value between 1,000 and the distribution mean (0.99865 or 5.98).
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