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C955 Formulas and Key Concepts
Table of Contents
Module 1: Basic Numeracy & Calculation Skills .....................................1
Module 2: Fractions, Decimals, & Percentages .......................................3
Module 3: Basic Algebra ...........................................................................4
Module 4: Descriptive Statistics for a Single Variable ............................5
Module 5: Descriptive Statistics for Two Variables ..............................10
Module 6: Correlation & Regression ......................................................12
Module 7: Probability ..............................................................................15
Module 1: Basic Numeracy & Calculation Skills
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Intervals: Pages 1.05-1.05.1
• An open circle denotes that the value is not to be included.
o Example for “Less Than”
o Example for “Greater Than”
• A closed circle means that the value is included.
o Example for “Less Than or Equal To”
o Example for “Greater Than or Equal To”
Sign rule for multiplication and division: Page 1.08
• Multiplying the same signs will result in a positive number
o ➕×➕=➕
o ➖×➖=➕
• Multiplying different signs will result in a negative number
o ➖×➕=➖ o
➕×➖=➖
Order of Operations: Pages 1.12-1.13
• Remember the acronym PEMDAS o
Parentheses
2
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o Exponents
o Multiplication or Division (Left to Right) o Additions
or Subtraction (Left to Right)
Module 2: Fractions, Decimals, & Percentages
Converting Decimals, Fractions, and Percentages: Page 2.14
• Decimals, Fractions, and Percentages are just different ways of
showing the same value
o
= . = %
Unit Conversions: Pages 2.15-2.15.3
(only the most common; a complete list can be found in MindEdge on page
2.15)
• Common Unit Conversions for Household Measures of Volume:
o 1 tablespoon = 3 teaspoons o 1 fluid ounce
= 2 tablespoons o The conversions involving
one gallon can be visualized below:
• Common Metric Conversions:
3
C955 Formulas and Key Concepts
Table of Contents
Module 1: Basic Numeracy & Calculation Skills .....................................1
Module 2: Fractions, Decimals, & Percentages .......................................3
Module 3: Basic Algebra ...........................................................................4
Module 4: Descriptive Statistics for a Single Variable ............................5
Module 5: Descriptive Statistics for Two Variables ..............................10
Module 6: Correlation & Regression ......................................................12
Module 7: Probability ..............................................................................15
Module 1: Basic Numeracy & Calculation Skills
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Intervals: Pages 1.05-1.05.1
• An open circle denotes that the value is not to be included.
o Example for “Less Than”
o Example for “Greater Than”
• A closed circle means that the value is included.
o Example for “Less Than or Equal To”
o Example for “Greater Than or Equal To”
Sign rule for multiplication and division: Page 1.08
• Multiplying the same signs will result in a positive number
o ➕×➕=➕
o ➖×➖=➕
• Multiplying different signs will result in a negative number
o ➖×➕=➖ o
➕×➖=➖
Order of Operations: Pages 1.12-1.13
• Remember the acronym PEMDAS o
Parentheses
2
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o Exponents
o Multiplication or Division (Left to Right) o Additions
or Subtraction (Left to Right)
Module 2: Fractions, Decimals, & Percentages
Converting Decimals, Fractions, and Percentages: Page 2.14
• Decimals, Fractions, and Percentages are just different ways of
showing the same value
o
= . = %
Unit Conversions: Pages 2.15-2.15.3
(only the most common; a complete list can be found in MindEdge on page
2.15)
• Common Unit Conversions for Household Measures of Volume:
o 1 tablespoon = 3 teaspoons o 1 fluid ounce
= 2 tablespoons o The conversions involving
one gallon can be visualized below:
• Common Metric Conversions:
3
