ACT 数学与评估 - 算术与统计

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

整数

a part of a whole number, such as ½

分数

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

小数

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

均值

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

平均的

a combination of a whole number and a proper fraction

混合数

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

质数

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

有理数

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

无理数

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

复数

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

实数

any positive number without fractions or decimals, including zero

整数

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

根

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

范围

a correct answer to a problem in mathematics or a puzzle

解答

the result of multiplying two or more numbers or quantities together

乘积

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

因子

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

值

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

不等式

(mathematics) a statement indicating the equality between two values

方程

having the least or smallest amount possible

最低的

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

指数

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

算术序列

having the quality of being divided, especially by a number

可被整除的

to multiply a value or number by itself

平方

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

不当分数

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

商

the constant ratio between consecutive terms

公比

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

公倍数

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

公因数

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

公分母

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

最小公倍数

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

概率

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

中位数

the value that appears most frequently in a data set

众数

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

双峰的

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

估计

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

频率

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

分布

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

标准差

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

误差范围

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

随机的

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

趋势线

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

点图

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

线性模型