A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then, once the machine is running, a sample of six tubes is taken every three hours and weighed with the following results:

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then, once the machine is running, a sample of six tubes is taken every three hours and weighed with the following results:
 

    WEIGHT OF TOOTHPASTE
Time 7 am 6.69 6.68 6.79 6.77 6.74 6.76
10 am 6.71 6.72 6.71 6.76 6.75 6.74
1 pm 6.66 6.68 6.67 6.71 6.76 6.78
4 pm 6.73 6.74 6.72 6.76 6.78 6.75
7 pm 6.75 6.73 6.75 6.77 6.79 6.75


The measurement of quality is based on _______.

A. a scale

B. an attribute

C. a chart

D. a variable

 
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