WGU C955 applied probability and statistics Exam Questions With Verified Answers

Discrete data - Answer Has distinct values, can be counted, had unconnected points (think dots) Continuous data - Answer Has values within a range, measured not counted, does not have gaps between data points (data is connected lines or curves). Example of discrete data - Answer Days of the week Expressions - Answer A group of symbols such as numbers and operators that has mathematical validity Commutative - Answer The order in which the numbers appear in the sum can be reversed Identity property - Answer Adding 0 to any number does not change the original number Additive inverse - Answer Values that are equally far from 0 on the number line. Negative - Answer When multiplying a positive number by a negative number the result is always Positive - Answer Multiplying a negative number by a negative number results in a positive Factors - Answer Integers that evenly divide the initial integer Prime number - Answer Positive integer with exactly two positive factors consisting of 1 and itself Composite number - Answer Has at least one positive factor other than one and itself Factorization - Answer Process of breaking up a composite number into its prime factors fundamental theorem of arithmetic - Answer Any integer greater than one is either Prime or the product of Prime numbers Principal square root - Answer Positive square root of a number Radican - Answer Number under radical sign √16=4 Open Circle - Answer Represents less than or greatest than on the number line Perfect square - Answer Product of any integer with itself yields a perfect square. Whole numbers - Answer positive numbers with a whole value Integers - Answer Numbers with no fractions or decimal value but can be positive or negative Rational numbers - Answer Numbers that can be expressed as a fraction or decimal values that have that end or repeat forever. Includes all integers since all integers can be expressed as fractions. Real numbers - Answer Everything that can be included in a number line including pi. Fractions - Answer Express numbers which are part of a whole