CPP Data Analysis & Reporting 2

Question 1

A packaging engineer notices that defect rates spike every Monday morning. Which type of analysis best identifies this pattern?

Accepted Answer

Time-series analysis

Answer

Time-series analysis tracks data points over time, making it ideal for identifying cyclical or day-of-week patterns in defect rates.

Question 2

When creating a control chart for a packaging line's fill weight, the process shows all points within control limits but exhibits a run of 8 consecutive points above the centerline. This indicates:

Accepted Answer

A potential process shift requiring investigation

Answer

A run of 8 or more consecutive points on one side of the centerline is a non-random pattern indicating a potential process shift, even when within control limits.

Question 3

Which metric best measures the efficiency of packaging material usage relative to finished goods produced?

Accepted Answer

Material yield rate

Answer

Material yield rate measures the proportion of input material that becomes usable finished product, directly reflecting packaging material efficiency.

Question 4

In a packaging cost report, fixed overhead is allocated at $2.50 per unit at 100,000 units/month production. If production drops to 80,000 units, what is the new overhead rate per unit?

Accepted Answer

$3.125

Answer

Fixed costs remain constant ($250,000 total), so dividing by 80,000 units gives $3.125 per unit — fixed costs per unit rise as volume falls.

Question 5

A scatter plot comparing seal strength versus sealing temperature shows an R² value of 0.89. This means:

Accepted Answer

Temperature explains 89% of the variation in seal strength

Answer

R² (coefficient of determination) indicates what percentage of variability in the dependent variable is explained by the independent variable.

(CPP) Certified Packaging Professional Practice Test

(CPP) Certified Packaging Professional Practice Test

CPP Data Analysis & Reporting 2