10 free CSSGB practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CSSGB Practice Test 7Tutor mode
Question 1 of 10
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In a 2² experiment on the tensile strength of a welded bracket, raising weld current (A) from low to high increases strength from 40 to 50 MPa when wire speed (B) is low, and from 46 to 56 MPa when wire speed is high. What will the interaction plot of A by B show?