Which of the following numbers in the data set is an outlier? 21, 23, 19, 25, 83, 23, 21 pls it is for my friend

The outlier in this set of data is 83.

The outlier in a data set is any number that is much higher or lower than the average of the set.

83 is nowhere near the average of 23 in this set, and so it is the sole outlier.

Hope this helps!

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0