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Exam ICBB topic 1 question 65 discussion

Actual exam question from Six Sigma's ICBB
Question #: 65
Topic #: 1
[All ICBB Questions]

For the data shown here which statement(s) are true? (Note: There are 2 correct answers).

  • A. With 95% confidence, we cannot conclude if the samples are from three Normal Distributions.
  • B. With greater than 95% confidence, we conclude the samples are from Non-normal Distributions.
  • C. If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test.
  • D. If we wanted to compare the Central Tendencies of these three samples we could use Mood’s Median test.
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Suggested Answer: BD 🗳️
by InvisibleBeing at June 9, 2023, 2:12 a.m.

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InvisibleBeing
11 months, 2 weeks ago
I THINK "BD" are the correct answers. If the populations being sampled are normally distributed or each sample is greater than 20, use the one-way ANOVA. If the populations being sampled are severely skewed and you have small samples, use the Mood's median or the Kruskal-Wallis test. Although the Mood’s median test does not require normally distributed data, that does not mean that it is assumption free. The assumptions of Mood’s median test are that the data from each population is an independent random sample and the population distributions have the same shape.
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