The following is the frequency distribution for the speed of a sample of automobiles traveling on an interstate highway. 
The mean is
Definitions:
Joint
A structure in the human or animal body at which two parts of the skeleton are fitted together, allowing for movement or flexibility.
Bursitis
Inflammation of a bursa, typically one near a joint, causing pain, swelling, and restricted movement.
Lubricating Fluids
Substances applied between surfaces to reduce friction, wear, and heat generation, enhancing the longevity and efficiency of mechanical systems.
Inward Curvature
The bending or curving of a structure towards the inside or center.
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