IT 313 QUIZ (Final)

What is the main purpose of quality control?

• To increase production speed
  customer service

• To maintain consistent product quality while optimizing processes

• To reduce employee workload

• To enhance

What does the mean (µ) of a normal distribution represent?

• The dispersion of the data

• The range of the data

• The center of the distribution

• The frequency of occurrence

Approximately what percentage of data lies within two standard deviations in a normal distribution?

• 68%

• 95%

• 99.7%

• 50%

Which distribution is best used for binary outcomes?

• Normal distribution

• Bernoulli distribution

• Poisson distribution

• Exponential distribution

What is the probability of failure in a Bernoulli distribution?

• 1 − p

• p^2

• p + 1

• 1/p

Which parameter represents the mean number of events in a Poisson distribution?

• k

• µ

• λ

• σ

What is a key feature of the Poisson distribution?

• It models continuous data

• Events occur at a constant rate

• It is symmetric

• It deals with binary outcomes

Why is data collection important in quality control?

• It reduces the need for statistical analysis

• It improves employee satisfaction

• It helps monitor processes and identify areas for improvement

• It replaces the need for automated systems

What type of data can take any value within a range?

• Discrete data

• Binary data

• Continuous data

• Nominal data

Which sampling method ensures every item has an equal chance of selection?

• Systematic sampling

• Random sampling

• Stratified sampling

• Convenience sampling