Using the Laney p’ Control Chart for Monitoring COVID-19 Cases in Jordan

Table 3

Comparison between tests 1 and 3 in detecting process change.

	Direction	Single stage				Multistage
		Laney p’			EWMA	Multistage
		Test 1	Test 3	Test 3
1	Downward	PW 52–20	PW 52–20		PW 51–20
2	Upward	PW 11–21	PW 10–21		PW 10–21
		PW 7–21	PW 5–21
3	Downward	PW 19–21		PW 17–21	PW 19–21
4	Upward					PW 30–21 test 1
5	Upward	PW 46–21	PW 43–21	PW 37–21	PW 49–21	PW 40–21
6	Downward	PW 52–21
7	Upward	PW 3–22	PW 6–22		PW 3–22	PW 4–22

test 3 variant, test did not trigger.