MR Data Analysis and Interpretation 3

Question 1

An MR is analyzing customer satisfaction survey results using a Likert scale. Which measure of central tendency is most appropriate for ordinal data?

Accepted Answer

Median

Answer

The median is the most appropriate measure of central tendency for ordinal data because it preserves rank order without assuming equal intervals.

Question 2

When presenting QMS performance data to top management, which format best communicates trends over multiple reporting periods?

Accepted Answer

A line graph showing data across consecutive periods

Answer

A line graph across consecutive periods clearly displays trends, direction of change, and rate of improvement over time.

Question 3

Process data has a mean of 50 and standard deviation of 5. Upper specification limit is 62. What is the process sigma level?

Accepted Answer

2.4 sigma

Answer

The distance from mean to USL is 12 units; dividing by standard deviation (5) gives 2.4 sigma.

Question 4

Which type of data requires attributes control charts such as p-charts or c-charts?

Accepted Answer

Count or proportion of nonconforming units

Answer

Attribute control charts handle count data (defects per unit) or proportions (fraction defective), not continuous measurements.

Question 5

A Management Representative must determine if a new supplier's defect rate is statistically different from the previous supplier. Which analytical approach is appropriate?

Accepted Answer

Hypothesis testing using appropriate statistical tests

Answer

Hypothesis testing provides a statistically rigorous method to determine if observed differences are significant or due to random variation.

(MR) Management Representative Certification Practice Test

(MR) Management Representative Certification Practice Test

MR Data Analysis and Interpretation 3