1. Because control charts use sample sizes much less than 30 as the Central Limi
ID: 3020432 • Letter: 1
Question
1. Because control charts use sample sizes much less than 30 as the Central Limit Theorem requires for calculating the standard error of the mean, control chart correction factors are used to account for lower sample sizes.
Answer
True
False
2. The center line CL for the Xbar chart is the average of the averages.
Answer
True
False
3. When greater sensitivity is required just over the 1st sigma line then CUSUM or EWMA charts are used.
Answer
True
False
4. The Central Limit Theorem requires
Answer
A) a sample size of at least 30 be used to ensure that the samples means are normally distributed.
B) the population be normally distributed to ensure that the samples means are normally distributed.
C) the bootstrap method to be used to select the sample.
D) the resampling technique to be used to select the sample.
A) a sample size of at least 30 be used to ensure that the samples means are normally distributed.
B) the population be normally distributed to ensure that the samples means are normally distributed.
C) the bootstrap method to be used to select the sample.
D) the resampling technique to be used to select the sample.
Explanation / Answer
1. Yes, because of to get accurate values in control charts use the sample size should be less than 30.
2. Yes, Atthe time of calculating Control limit (CL), we should take mean of the mean
3.Yes, to get greater sensitivity 3.Yes, to get greater sensitivity 1st sigma line then CUSUM or EWMA charts are used.
4. Option: B, population be normally distributed to ensure that the samples means are normally distributed.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.