IGNOU MST 14 2026 - In a manufacturing process, 4 items are inspected every hour for 10 co

Question

In a manufacturing process, 4 items are inspected every hour for 10 consecutive hours.

The measured quality characteristic (in mm) is given below:

The measured quality characteristic (in mm) is given below.

Hour	1	2	3	4
1	50	52	51	49
2	51	50	53	52
3	49	50	48	51
4	52	54	53	51
5	50	49	51	50

24 Mar 2026

Answer :

Word Count : 334

First, calculate the mean ((\bar{X})) and range (R) for each hour. Hour 1: Measurements: 50, 52, 51, 49 * Mean: ((50 + 52 + 51 + 49)/4 = 202/4 = 50.5) * Range: (52 - 49 = 3) Hour 2: Measurements: 51, 50, 53, 52 * Mean: ((51 + 50 + 53 + 52)/4 = 206/4 = 51.5) * Range: (53 - 50 = 3) Hour 3:

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Related Questions

Year / Quarter	$Q_1$	$Q_2$	$Q_3$	$Q_4$
2018	48	41	60	65
2019	58	52	68	74
2020	60	56	75	78

Hour	1	2	3	4
1	50	52	51	49
2	51	50	53	52
3	49	50	48	51
4	52	54	53	51
5	50	49	51	50

6	53	52	54	55
7	48	49	50	47
8	51	52	50	51
9	54	55	53	54
10	50	51	49	50

Hour	1	2	3	4
1	50	52	51	49
2	51	50	53	52
3	49	50	48	51
4	52	54	53	51
5	50	49	51	50

Year / Quarter	$Q_1$	$Q_2$	$Q_3$	$Q_4$
2018	48	41	60	65
2019	58	52	68	74
2020	60	56	75	78

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