Develop and R chart
Great Sounds Inc produces speakers all through North America. Great Sounds attempts to produce speakers with 200 Watts of output power. To study as well as control the manufacturing process, 10 samples each containing three speakers, are selected from different shifts of operations. The outcomes are reported below.
|
Sample
|
Speakers Actual output power
|
|
|
Test 1
|
Test 2
|
Test 3
|
|
1
|
200
|
202
|
204
|
|
2
|
198
|
203
|
201
|
|
3
|
201
|
200
|
199
|
|
4
|
198
|
203
|
205
|
|
5
|
198
|
200
|
203
|
|
6
|
200
|
200
|
210
|
|
7
|
199
|
199
|
202
|
|
8
|
202
|
200
|
220
|
|
9
|
210
|
215
|
200
|
|
10
|
200
|
195
|
200
|
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