Q-DAS tests your knowledge of technical statistics. Can you cope with our questions?

1. What is the quintessence of Taguchi’s loss function?

• You experience a loss when you try to reach a target value.
• The more your product specification deviates from the target value, the less the loss of quality.
• You experience a loss of quality the moment your product specification deviates from the target value.

2. Which statistic describes the number with the highest frequency in a sample?

• Mode
• Median
• Variance

3. Which pair of parameters describes the normal distribution model?

• Expectation µ and standard deviation σ
• Range R and median
• Maximum value and inflection point

4. Which series includes nominally scaled values?

• 30°C, 40°C
• Table, chair, picture frame
• Grade 1, grade 2

5. The values of a sample show several peaks in a histogram which shows that…

• the samples of several populations are mixed (e.g. data from different cavities, batches, etc.).
• the sample values were subject to random influences.
• the sample includes several outliers.

6. In order to conduct a statistical procedure, you formulate a null and an alternative hypothesis. The statistical procedure accepts or rejects…

• the null hypothesis.
• the alternative hypothesis.
• the null and alternative hypothesis.

7. Which quality control chart allows for minor systematic deviations of the distribution of characteristics?

• Shewhart control chart for standard deviations
• Shewhart median chart
• Acceptance chart for averages

Our Q-QUIZ is published once a month. You can find the answer to all questions of the current quiz online with the release of the next quiz.