Wgu C784 Applied Healthcare Statistics Questions & Answers

rational number - ANSWERSA number that can be written as a ratio of integers, which means it can be written as a fraction. product - ANSWERSThe result of multiplying values. whole number - ANSWERSA number whose value is 0 or greater and can be represented without a fractional or a decimal component. identity property - ANSWERSThe property that 0 can be added to any number without changing the value of the number. Likewise, 1 can be multiplied by any number without changing the value of that number. associative property - ANSWERSThe property that under certain operations in a multi-step expression, the computations may be done in any order. Commonly represented as (a + b) + c = a + (b + c). Addition and multiplication both have this property, but subtraction and division do not. perfect square - ANSWERSThe product of any integer with itself yields this. So, a number is this if it can be written as the square of an integer. For example, 9 is this because 3 * 3 = 9. Other examples are 16, 25, 36, 49,... set - ANSWERSIn mathematics: a collection of numbers. order of operations - ANSWERSA set of rules that defines the order in which mathematical operations should be performed multiplicative inverse - ANSWERSThe number you must multiply x by to get 1. For example, 5 and 1/5. principal square root - ANSWERSThe positive square root of a number. interval - ANSWERSA set of numbers between two specified values. operators - ANSWERSA word or symbol (such as + or -) that indicates an operation between values. commutative - ANSWERSThe property that the order of the numbers under the operation does not change the result. Addition and multiplication have this property: a + b = b + a and ab = ba. radical sign - ANSWERSThe symbol which indicates to take the square root of the number that follows. additive inverse - ANSWERSTwo numbers equidistant from 0 on a number line whose sum is 0. For example, 3 and -3. greatest common factor (GCF) - ANSWERSThe greatest number that is both a factor of a and a factor of b. factor tree - ANSWERSA graphical method used to identify the prime factorization of an integer. integer - ANSWERSA number, (positive, negative, or zero), that can be represented without a fractional or a decimal component. discrete - ANSWERSA collection of numbers whose values are distinct, separate, and unconnected. prime factorization - ANSWERSDetermining the set of prime numbers whose product is the original integer. continuous - ANSWERSA collection of numbers whose values are not dividable into distinct units. expressions - ANSWERSA string of terms that are connected by division, addition, and subtraction operations. quotient - ANSWERSThe result of a division expression. exponents - ANSWERSSometimes called a power, it is a quantity that represents repeated multiplication. factor - ANSWERSAn integer that divides another integer. We say an integer, x, is a factor of another integer, y, if the quotient y/x is also equal to an integer. composite number - ANSWERSA number with more factors than just one and itself. Not a prime number. Fundamental Theorem of Arithmetic - ANSWERSA concept which states that any integer greater than 1 is either prime or is the product of a unique set of prime numbers. prime number - ANSWERSA number with only two factors: one and itself. percent proportion - ANSWERSProportion that is equivalent to the given ratio but has a denominator of 100. denominator - ANSWERSThe number written after the slash, or below the fraction bar, in a fraction. conditional proportion - ANSWERSA proportion where one part of a proportion is a variable, or unknown quantity. numerator - ANSWERSThe number that is written before the slash, or above the fraction bar, in a fraction. proper fraction - ANSWERSA fraction where the number in the numerator is less than the number in the denominator. trailing zeros - ANSWERSSequence of zeros after the last non-zero digit in a decimal number. proportion - ANSWERSA true statement in which two ratios are equal to each other. butterfly method - ANSWERSCross-multiplication method used to determine whether two fractions are equal. The numerator of one fraction is multiplied by the denominator of the opposite fraction on both sides. unit conversion - ANSWERSA method used to change between measurement systems. terminal decimal - ANSWERSA decimal number that has a finite number of digits. least common multiple (LCM) - ANSWERSThe smallest number in value that is a multiple of two or more numbers. rounding - ANSWERSA method of estimating in order to make working with a number easier. reciprocal - ANSWERSA reciprocal of a number is that number which, when multiplied by the original number, equals 1. It is the same as the multiplicative inverse. ratio - ANSWERSMeasures one quantity in relation to another quantity.