The logistic function 1/(1+e^-x ) A) is concave. B) is convex. C) is S-shaped. D) takes on values between -1 and 1.

Name: The logistic function 1/(1+e -x ) A) is concave. B) is convex. C) is S-shaped. D) takes on values between -1 and 1.
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Quizplus · Accepted Answer

The logistic function is a common S-shaped curve used in modeling, particularly in logistic regression. It is neither concave nor convex, but rather has both concave and convex portions. The function takes on values between 0 and 1, not -1 and 1 as stated in choice D.

The Logistic Function 1/(1+e -X )

The Logistic Function 1/(1+e^-X )