Sarah Soliz,Director of Quality Programs,is designing and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 inches,and mean of the 26 ranges is 0.15 inch.The centerline for her R chart is ____.
A)0.15
B)26
C)5
D)112
E)15

Question

Sarah Soliz,Director of Quality Programs,is designing  and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 inches,and mean of the 26 ranges is 0.15 inch.The centerline for her R chart is ____.
A)0.15 
B)26 
C)5 
D)112 
E)15

Quizplus · Accepted Answer

The Answer of Sarah Soliz,Director of Quality Programs,is designing  and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 inches,and mean of the 26 ranges is 0.15 inch.The centerline for her R chart is ____.
A)0.15 
B)26 
C)5 
D)112 
E)15

Sarah Soliz,Director of Quality Programs,is Designing and R Charts