makeQA_ExpectedValue: Generate expected value function

In kristynpantoja/statexams: What the Package Does (One Line, Title Case)

Description

Generate expected value function

Usage

makeQA_ExpectedValue(prob = NULL, values = NULL)

Arguments

prob	Vector of probabilities corresponding to values vector. Must sum to 1 and be non-negative
values	Vector of values that r.v. X takes

Value

a vector with first element as question, second element as correct answer, and other elements as other answer choices.

Examples

makeQA_ExpectedValue(prob = c(0.4, 0.2, 0.4), values = c(2,4,8))
"f(2) = 0.4.  f(4) = 0.2.  f(8) = 0.4.  What is the expected value of X?"
"4.8"
"14"
"15"
"84.672"
"5"

kristynpantoja/statexams documentation built on June 3, 2019, 5:25 a.m.