To highlight multiple tables, click each table by holding the ________ key

Answer the following statement(s) true (T) or false (F)

A time domain reflectometer sends a signal and analyzes the return signal's change in amplitude to determine where cable imperfections may exist.

Which of the following statements is false?

a. The descriptive statistics mean, median and mode are measures of central tendency—each is a way of producing a single value that is in some sense typical of the others. b. The following session creates a list called grades, then uses the built-in sum and len functions to calculate the median “by hand”—sum calculates the total of the grades (397) and len returns the number of grades (5): In [1]: grades = [85, 93, 45, 89, 85] In [2]: sum(grades) / len(grades) Out[2]: 79.4 c. Like functions min and max, sum and len are both examples of functional-style programming reductions—they reduce a collection of values to a single value. d. The Python Standard Library’s statistics module provides functions for calcu-lating the mean, median and mode—these, too, are reductions.