A store manager tracks the number of customer complaints each week. The following data reflect a random sample of ten weeks. 
The range for these data is 8.
Definitions:
Doublet
A pair of closely spaced lines or peaks observed in spectroscopy or other forms of analysis, indicating two related quantum states.
Singlet
In spectroscopy, a singlet represents a state in which all the electron spins are paired, leading to no magnetic spin multiplicity in the atomic or molecular orbital.
Proton Spin Decoupled
A nuclear magnetic resonance technique where the interaction between hydrogen nuclei and neighboring nuclei is removed to simplify the spectrum.
Triplet
In chemistry, a molecular entity with three similar elements or functional groups in its structure or a magnetic quantum state distinguished by three levels.
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