What Would Be an Acceptable Shielding Gas Mixture of Argon

question 13

Multiple Choice

What would be an acceptable shielding gas mixture of argon (Ar) and oxygen (O) for GMA welds?

• A) Ar + 2% O₂
• B) Ar + 1% O₂
• C) Ar + 7% O₂
• D) Ar + 0% O₂

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Definitions:

Chi-square Test

A statistical assessment designed to ascertain whether a notable relationship exists between two variables of categorical nature.

Association

A relationship or connection between two or more variables, where changes in one variable may be related to changes in another, though not necessarily causally.

Row Variable

In data analysis, a row variable refers to a variable that is represented by rows in a matrix or table format, distinguishing different observational units.

Column Variable

A variable represented by a column in a dataset, where each entry in the column represents a different value of the variable.