## Q-QUIZ MARCH 2019

### Evaluate complex situations based on statistical methods

Statistical methods and data analysis help you gain exactly the required type of information from a huge data pool. Many of these methods are applied in quality assurance on a daily basis. Find the matching procedure in each individual case.

1. Most research in the field of autonomous driving currently concentrate on emergency evasive manoeuvres. You collect pairs of values consisting of the speed and corresponding reaction time of the car when a different vehicle changes the lane and recklessly cuts in front of the car. Which method would provide a formula of the reaction time as a function of the car’s speed that best fits the observed data?

• Levene's test
• Chi-squared test
• Simple linear regression

2. You assess the performance of two handball players who are considered to be equally well. You keep the records of the throwing velocity of 100 throws collected from both players. Which test possibly determines an average velocity difference between the two athletes?

• Two-sample t-test
• Shewhart average chart
• Chi-squared test

3. When you play Ludo (board game) and you want to enter a token in a play, you have to roll a 6 with three rolls. Which procedure is best suitable to find out your chance of rolling a 6?

• Probability calculus
• Shewhart average chart
• Gauge R&R (GRR, measurement system analysis)

4. Ten discus throwers take part in a competition. Two people measure the throwing distance of each athlete twice. Which procedure uses the total variation to determine whether the “measurement process” is qualified?

• Two-sample t-test
• Probability calculus
• Gauge R&R (GRR, measurement system analysis)

5. 2000 men and women responded to a survey on their interest in the European Football Championship 2020. Possible answers were “Yes“ and “No“. Which method calculates the significance of the gender-specific difference in interests?

• Simple linear regression
• Levene's test
• Two-sample p-test

6. You collect the 25 best times of six cross-country skiers. Which procedure determines whether the variances of the single times differ significantly?

• Simple linear regression
• Levene's test
• Gauge R&R (GRR, measurement system analysis)

7. Every 30 minutes, you check the filled volume of five bottles of a filling machine. Which method checks whether the machine is adjusted to the target value by means of the average of filled volumes?

• Shewhart average chart
• Probability calculus
• Chi-squared test

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