Question

The following data give the average life in hours and
the
of 12 sample each of 5 lamps. Construct the control charts for and
comment on the state of control.
120 127 152 157 160 134 137 123 140 14
so 44 60 34 38 35 45 623
On inspection of 10 samples, each of size 400, the number
articles were
19 9 12 15 26 14 15
Draw the mp chart and p chart and comment on the state of corte
​

Answer 1

Answer:

In this question the number of observations is 5 for each sample. So we use A2 = 0.577, D3 = 0, D4 = 2.114 from the table of control chart constants. Read more on Sarthaks.com - https://www.sarthaks.com/881085/the-following-data-gives-the-average-life-hours-range-samples-lamps-each-the-data-are-sample