Define
What does DPU stand for?
Defects per unit
What does FMEA stand for?
Failure Mode and Effects Analysis
What does the symbol X-bar stand for?
Sample mean
Is 0.9 a strong or weak correlation?
Strong
What is the tool that documents our sustainment plan for our project?
Control plan
What type of chart is based on the 80/20 principle?
Pareto chart
If you run a normality test and the p-value is 0.01, what does this tell you?
The data is not normal
When the p-value is <0.05, what can we say about the null hypothesis?
Reject the null hypothesis
What does DOE stand for?
Design of Experiments
What charts to you use in the control phase to ensure the process output remains in control?
Control charts
In a six sigma process, how many defects occur per million opportunities
3.4
What type of process map has horizontal sections to show the process steps by group or person?
Swim lane or deployment flow process map
We want to compare two means from normal data. What type of hypothesis test should we use?
2-sample t-test
When doing linear regression, do we want the r-squared value to be closer to 0 or 1?
1
Name the 5 steps in 5s
Sort, Set, Shine, Standardize, Sustain
Name 4 out of the 8 wastes
TIMWOODS: Transportation, inventory, waiting, overproduction, overprocessing, defects, skills
What are the 5 elements on the SIPOC chart?
Supplier, Input, Process, Output, Customer
Name one of the hypothesis tests that can be done if our data is not normal?
1-Sample Sign Test, Mann-Whitney, Mood's Median, Kruskal-Wallis, Levene's Test of Equal Variance
or generally nonparametric tests
What type of chart shows the relationship between two variables?
Scatter plot
What is a poka-yoke?
Mistake proofing device or method
Our process produces 100 pieces of candy in 3 steps. The number of defects per step are:
Step 1: 4 defects
Step 2: 10 defects
Step 3: 7 defects
What is the rolled throughput yield (RTY)?
80.4%
List one of the actions you can take to improve process capability (Cpk)?
Change specs, shift mean, or reduce variation
Conduct a 2-sample t-test using the summarized data option.
Sample 1: Sample size = 30, mean = 18, st.dev = 5
Sample 2: Sample size = 30, mean = 25, st. dev = 10
Can we say that there is a statistically significant difference between the population means?
Yes, p-value = 0.001
In linear regression, what is a residual?
Difference between actual value (y) and value predicted by the regression equation
An I-MR control chart shows what 2 things?
Individual values and moving range