All great answers. Here is another thought:
You could also think about the Null Hypothesis as stating the status quo: that is, an assumption of there being no difference, and you have to come up with evidence to either reject this hypothesis or fail to reject it.
The classic analogy is the criminal trial in which an assumption of innocence (i…[Read more]
Strayer replied to the topic How Do I Overcome Resistance to Continuous Improvement Plans? in the forum Implementation 19 hours, 7 minutes ago
I concur with comments about CEO. When I was with AlliedSignal Larry Bossidy bought in to SS big time, to the point of saying that everything we do is SS. We made progress, although there was valid criticism that it couldn’t always be seen on the bottom line. Then we bought/merged with Honeywell. The new CEO wasn’t a disciple, we fell bac…[Read more]
yes, just keep it simple…. hear null hypothesis and you should hear “equal” and the hypothesis is the statistical measure is equal to something else.
even for a regression…the coefficients are equal to zero for the null hypothesis which means no regression exists
@BayanKamal i agree with Darth’s comments. Just a side not. If you go out and collect data on two separate occasions and end up with exactly the same values there is a real high probability there is something else going on. Something like a measurement system issue or something like that. Even if you end up with exactly the same mean and…[Read more]
Mike Carnell replied to the topic How Do I Overcome Resistance to Continuous Improvement Plans? in the forum Implementation 1 day, 2 hours ago
@Darth i know exactly the feeling. We did the South Africa work won Global Deployment of yhe Year for 2 consecutive years. Had Archbishop Desmond Tutu come out and spend 3 days on site because of the stuff he had heard about what was going on. Change CEO’s and the vision is gone. Company just sold.
People throw the term Machiavellian around like…[Read more]
The definition of “null” is having or associated with the value zero. Therefore all null hypotheses will be in some form indicating an absence of something. In the two sample t test for example, the null is that the difference in the population means of the two samples is zero or no difference. In regression, the null hypothesis is that th…[Read more]
Darth is right about collecting sufficient data and about not having enough data. But not all processes allow large amounts of data to be obtained. Automotive can develop a lot of data in a very short period of time. Some aerospace industries cycle so slowly that it could take days or weeks to obtain enough data to be statistically si…[Read more]
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