Question

Amazon.com reported that 78 percent of a sample of 2,890 readers gave J. K. Rowling's 2007 release, Harry Potter and the Dealthy Hallows, 5 out of 5 starts. Is the 78 percent figure a statistic or a parameter?
A. Statistic
B. Parameter

Answer 1

Let's differentiate the terms statistic and parameter. Statistic is a branch of mathematics that involves the treatment of various data through collection, preparation, analysis and interpretation. A parameter is a unit of measure which is an element of the system.

Since 78% is the percentage of the whole data, this is a statistic. A parameter, for instance, is the 2,890 readers :)

The answer is A.

I hope you clearly understood my explanation :)