Sarah Soliz, Director of Quality Programs, Is Designing and R

question 6

Multiple Choice

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 centimetres, and mean of the 26 ranges is 0.15 centimetres.The centerline for her R chart is ___.

• A)0.15
• B)26
• C)5
• D)112
• E)15

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Definitions:

X-axis

The horizontal axis in a coordinate system, typically used to represent the independent variable in a graph.

Median

The middle value in a sorted list of numbers, effectively dividing the dataset into two halves.

Normally Distributed

Describes a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.

Gasoline Prices

The economic measure tracking the cost at which gasoline is sold to consumers, often subject to changes based on oil market dynamics, geopolitical factors, and regulatory policies.