Which of the Following Is True of Weld Penetration into the Base

question 22

Multiple Choice

Which of the following is true of weld penetration into the base metal at the start of a bead?

• A) It can be obtained by using a quick start.
• B) It can be obtained by quickly reversing the weld direction.
• C) It is not possible for the start of the weld to have deep penetration.
• D) Excess heat prevents deep penetration.

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Definitions:

Outlier

A data point that diverges significantly from the overall pattern of data in a dataset, potentially indicating a measurement error or a new trend.

IQR

The Interquartile Range (IQR) is a measure of statistical dispersion, being equal to the difference between the 75th and 25th percentiles of a data set.

Chebyshev's Theorem

A statistical theorem stating that for any real dataset, the proportion of values that fall within k standard deviations from the mean is at least 1-1/k^2 for k > 1.

Empirical Rule

A statistical principle that asserts in a normal distribution, almost all of the data is contained within three standard deviations from the mean.