What is a density curve?
a. density curve of a variable is any type of curve which represents the distribution of the variable.
b. a density curve of a variable represents the distribution of a discrete variable.
c. a density curve of a variable is a smooth curve with which one can identify the shape of the distribution of the variable.
d. a density curve of a variable represents the approximate distribution of a continuous variable.

The correct answer is C. A density curve of a variable is a smooth curve with which one can identify the shape of the distribution of the variable

Explanation:

A density curve displays the distribution of data over a continuous interval or period of time. This graph is a variation of a Histogram that uses cerner smoothing to plot values, allowing smoother distributions by smoothing out the noise. The peaks of a density graph help show where the values are concentrated in the interval.

An advantage of density graphs over histograms is that they are better for determining the distribution form because they are not affected by the number of containers used (each bar used in a typical histogram). A histogram consisting of only 4 compartments will not produce a sufficiently distinguishable form of distribution as a 20 compartment histogram would. However, with density charts this is not a problem.

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explanation:

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