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a measure of central tendency often referred to as average


the inverse operation of multiplication


having the same value


a mathematical sentence relating two mathematical expressions with an equal sign


a number expressed in the form a/b where a and b are whole numbers


the set of numbers

measure of central tendency

mean, median, mode


the middle number of a set of data.


the number or numbers that show up the most in a set of data

negative numbers

numbers that are less than 0

number line

a diagram representing all real numbers as points on a line

numberical order

to write numbers from smallest to largest


the difference between the least and greatest pieces of data


an arrangement of numbers in uniform intervals


any value for a variable that makes an equation true

stem and leaf plot

a frequency distribution made by arranging the data


a symbol or letter that stands for a number

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