Applied Probability and Statistics C955

Applied Probability and Statistics C955 17 studiers recently 4.7 (6 reviews) Students also studied Terms in this set (132) Western Governors UniversityC 955 Save WGU C955 applied probability and ...58 terms anna_calderon1 Preview WGU C955 - Pre Assessment 68 terms Browder30Preview C955 104 terms NightGoddess666 Preview WGU C Teacher mar Changing Improper Fractions and Mixed Numbers Improper fractions can be converted to mixed numbers by following these steps: Write division problem with numerator divided by denominator.Divide to determine quotient and remainder.Write mixed number with the quotient as the whole number and the remainder as the numerator over the same denominator.Changing Mixed Numbers Into Improper Fractions Mixed numbers can also be converted to improper fractions by following these

steps:

Multiply the whole number by the denominator of the fraction.To the product given by step 1, add the number of the numerator.Write the result of step 2 as the numerator of the improper fraction. The denominator of the improper fraction should be the denominator of the original fraction.Simplify the improper fraction by diving the numerator and denominator by all common factors.Discrete DataHas distinct values, can be counted, has unconnected points (dots) Continuous dataHas values within a range, measured (not counted) does not have gaps between data points. (connected lines or curves)

Sign rule for Multiplication and division1. +# x +# = +#

• -# x -# = +#

A product or division of two numbers of the same sign will result in a positive number

• -# x +# = -#
• +# x -# = -#

A product or division of two numbers of different signs will result in a negative number Prime NumberA prime number is a number that has exactly two positive factors; 1 and itself.Composite NumberA number that is not prime. It has 2 or more positive factor, including 1 and itself.Prime FactorizationWriting the number as a product of only prime numbers.Greatest Common Factor (GCF)The larges number that divides all the given numbers evenly.Multiples of a numberNumbers that can be obtained by multiplying the given number by 1, 2, 3, 4, etc.Least Common Multiple (LCM)the smallest positive number that can be divided by the given numbers Centigrade/Fahrenheit ConversionsC = (F - 32) X 5/9

F = (C X 9/5) + 32

Unit Conversions for Household Measures of Volume 1 tablespoon = 3 teaspoons

• oz = 2 tablespoons
• cup = 8 oz
• pint = 2 cups
• quart = 1 pints
• gallon = 4 quarts

Common Metric Conversions1 L = 1000 mL 1kg = 1000 g

• g = 1000 mg
• mg = 1000 mcg

Conversions between Household and Metric Units 1 cc (Cubic Centimeter) = 1 mL

• oz = 30 mL
• L = 1.057 qt
• tsp = 5 mL
• kg = 2.2 lbs
• oz = 28.35 g

Like TermsTerms that have the same variable raised to the same power; they can be combined using addition and subtraction Addition/Subtraction PrincipleWe can add or subtract the same number to both sides of an equation and the resulting expression remains equal.Multiplication/Division PrincipleWe can multiply or divide the same number to both sides of an equation and the resulting expression remains equal. (Divide by 0 is not allowed)

Butterfly MethodCross Multiply, if a/b = c/d then a x d = b x c Slope-Intercept Equationy = mx + b Where "m" is the slope, "b" is the y-intercept, and "x" and "y" follow the coordinate formula (x,y) Slope of a lineThe slope of a line is the ratio of the vertical change between two points on the line to the horizontal change between those two points.rise: (y2 - y1) / run: (x2 - x1) Reducing Fractions Using Prime FactorizationThe steps to reduce a fraction through prime factorization are as follows: List the prime factors of both the numerator and denominator.Cancel the factors that are common to both the numerator and denominator.Multiply across the numerator and denominator.6/8 6/8 = 2x3/2x2x2x 2x3/2x2x2x = 3/2x2 3/2x2 = 3/4 Reducing Fractions Using Common FactorsThe steps for the common factors method are as follows: Divide numerator and denominator by a common factor.Continue to divide by common factors.Write the reduced factor.

-28/42

-28/42 = (-28/7) / (42/7) = -4/6

Reduce -4/6 = (-4/2)/(6/2) = -2/3 Least Common DenominatorThe least common multiple of the denominators of two or more fractions.Let's determine the least common denominator of 13 and −27.Ask "do 3 and 7 have a factor in common?" No.So, this is situation 1. Multiply 3×7=21. 21 is the least common multiple of the numbers 3 and 7, therefore it is the least common denominator for 13 and −27.21 is the LCD for 13 and −27

Transforming FractionsDivide the least common denominator by the current denominator.Multiply both the numerator and the denominator by this integer.Let's now transform 1/3 and −2/7 each into their equivalent fractions that share a common denominator of 21 , which we found in the example above.First, convert 1/3 to an equivalent fraction with a denominator of 21 .Divide the LCD (the new denominator) by the current denominator.

21÷3=7

Multiply the numerator and denominators by 7 .

(1×7)/(3×7)=721

Adding Fractions with the Same DenominatorAdd or subtract the numerators of all the fractions in the expression Keep the same denominator! (The temptation to add the two denominators is very strong—resist.) If necessary, reduce the answer.Adding Fractions with Different DenominatorsFind the least common denominator (LCD).Use the LCD to find the equivalent fractions and rewrite the expression.Add or subtract the numerators of all the fractions in the expression.Keep the denominator the same—do not add them.If necessary, reduce the answer.