From the course: Six Sigma: Black Belt
Unlock the full course today
Join today to access over 23,400 courses taught by industry experts.
Correlation in Six Sigma projects - Minitab Tutorial
From the course: Six Sigma: Black Belt
Correlation in Six Sigma projects
- Have you ever wondered if the amount of coffee consumed on the morning of a test affects the outcome of your test score? Or is there a relationship between the price of apples and the price of gas? What I'm really asking is, is there a correlation? In Six Sigma projects, we're interested in seeing and analyzing how potential Xs impact Y. Is there a relationship between X and Y? And if there is, is it a statistically significant relationship? That's when a correlation hypothesis test is needed. In Green Belt training, you learned that when there is a relationship between two variables, we say there is correlation. The strength of the relationship is quantified by the correlation coefficient, or Pearson Correlation Coefficient. It can range from minus one to plus one, and if there is no correlation, the coefficient is zero or close to zero. The correlation and the coefficient are positive if one variable increases…
Practice while you learn with exercise files
Download the files the instructor uses to teach the course. Follow along and learn by watching, listening and practicing.
Contents
-
-
-
-
-
(Locked)
Overview of the Six Sigma Analyze phase2m 3s
-
(Locked)
Hypothesis testing roadmap3m 32s
-
(Locked)
Sample size determination7m
-
(Locked)
Confidence intervals3m 13s
-
(Locked)
Test for normality2m 50s
-
(Locked)
Compare variances5m 16s
-
T-tests6m 4s
-
(Locked)
ANOVA test3m 55s
-
(Locked)
Contingency tables6m 48s
-
(Locked)
Nonparametric tests6m 49s
-
(Locked)
Correlation in Six Sigma projects3m 46s
-
(Locked)
Linear regression4m 37s
-
(Locked)
Multiple regression5m 11s
-
(Locked)
-
-
-