ACT Math and Assessment - Arithmetic and Statistics

any number without fractions or decimals, including positive numbers, negative numbers, and zero

a part of a whole number, such as ½

(mathematics) a number less than one, called a fraction, that is represented as a period followed by the number of tenths, hundredths, etc.

(mathematics) the average value of a set of quantities calculated by adding them, and dividing them by the total number of the quantities

calculated by adding a set of numbers together and dividing this amount by the total number of amounts in that set

a combination of a whole number and a proper fraction

a number greater than 1 with only two devisors which can be itself or 1

a number that can be expressed as the fraction of two integers

a number incapable of being expressed as a ratio of two integers

a number that has both a real part and a part involving a unit that, when squared, gives a negative result

any number that can be found on the number line, including both positive and negative numbers, zero, and fractions

any positive number without fractions or decimals, including zero

a value that, when multiplied by itself a specified number of times, results in the given number

the difference between the highest and lowest values in a set of numbers

a correct answer to a problem in mathematics or a puzzle

the result of multiplying two or more numbers or quantities together

(mathematics) one of the numbers that another number can be divided by

(mathematics) an amount that is shown by a sign or letter

a statement that compares two quantities, expressions, or values and indicates their relative sizes

(mathematics) a statement indicating the equality between two values

having the least or smallest amount possible

a mathematical expression where a number is multiplied by itself a certain number of times determined by a variable

a sequence of numbers in which the difference between any two consecutive terms is constant

having the quality of being divided, especially by a number

to multiply a value or number by itself

a fraction where the the top number is greater than or equal to the equal to the bottom number

the result obtained by dividing one quantity or number by another, expressed as the outcome of a division operation

the constant ratio between consecutive terms

a number that is a multiple of two or more given numbers

a number that divides exactly into two or more given numbers without leaving a remainder

(mathematics) a number divisible by all the numbers that are below the line in a set of fractions

the smallest positive integer that is a common multiple of the denominators of two or more fractions

(mathematics) a number representing the chances of something specific happening

a statistical measure that represents the middle value of a data set when the values are arranged in ascending or descending order

the value that appears most frequently in a data set

having or involving two distinct modes, peaks, or most frequent values

to guess the value, number, quantity, size, etc. of something without exact calculation

the number of times a particular event occurs within a specific period or among a set of observations

(statistics) the way statistical data are arranged that shows the frequency in which the values of a variable are repeated

a measure of how much the values in a set typically differ from the average

the range within which the true value is expected to fall, accounting for potential inaccuracies in measurement or sampling

occurring in such a way that each possible outcome has a certain probability of occurring, but the specific outcome cannot be predicted with certainty

a straight line drawn through a set of data points on a graph to represent the general direction or pattern of the data

a type of statistical chart consisting of dots that represent individual data points

a mathematical representation that describes the relationship between two or more variables using a linear equation