So Far, There Have Been Three Generations of Mobile Phones

question 15

Short Answer

So far, there have been three generations of mobile phones: analog, digital personal communications service (PCS), and ____________________.

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Definitions:

Symmetric

Symmetric in statistics refers to a distribution or data set where the shape on either side of the mean is a mirror image, indicating equal distribution around the center.

Mean

The arithmetic mean is obtained by adding all the values in a set and dividing the result by the total number of values.

Median

The middle value in a data set, which separates the higher half from the lower half.

Range

In statistics, range is the difference between the largest and smallest values in a dataset.