Question

Any control chart has _______ number of control limits.

• A. 2
• B. 1
• C. 4
• D. 5

Hint:

Control charts typically use two control limits: the upper control limit (UCL) and the lower control limit (LCL) to monitor a process.

Answer 1

The Correct Option is A

A typical control chart has two control limits: the upper control limit (UCL) and the lower control limit (LCL). These limits help in monitoring the process variations and maintaining quality control.
Step 2: Analyzing the options.

• (A) 2: Correct. A control chart has two control limits – UCL and LCL.
• (B) 1: Incorrect. A control chart needs both upper and lower limits to function effectively.
• (C) 4: Incorrect. Control charts typically have only two limits.
• (D) 5: Incorrect. Control charts do not typically require five control limits.

Step 3: Conclusion.
The correct answer is (A) 2, as control charts have two control limits: upper and lower. Final Answer:} 2.