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

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 :)