A supermarket's monthly sales (in thousands of dollars)for the last year were as follows: 
Construct a relative frequency bar chart for this data set. How many observations are there in this data set?
Definitions:
Disorder
A disruption to regular bodily structure and function that often leads to discomfort, disability, or distress.
Theoretical Knowledge
Knowledge that is based on theory, principles, and concepts as opposed to practical application or experience.
Sterile Technique
A set of practices used in medical and surgical environments to prevent contamination and infection, maintaining a germ-free environment.
Oxygen Concentration
The percentage of oxygen within a given environment, mixture, or medical treatment, critical for maintaining adequate oxygen saturation in patients.
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