Making statistics intuitive
A polynomial is a mathematical expression made of variables, numbers, and whole-number exponents. These terms are combined with plus and minus signs. You can add, subtract, and multiply the parts, but you can’t divide by a variable. The variable is sometimes called an indeterminate. [Read more…] about Polynomials Explained: Definition, Degree & Factoring
Irrational numbers are real numbers that cannot be written as a fraction of two integers. That means you can’t write it as p/q, where p and q are whole numbers and q isn’t zero. [Read more…] about Irrational Numbers: Definition & Examples
Pi is one of the most famous numbers in mathematics. It’s the ratio of a circle’s circumference to its diameter. In other words, it’s the number you get when you divide the circumference by the diameter. The circumference is the length of the circle’s perimeter while the diameter is its width through the central point. We denote the value of this ratio using the Greek letter π. [Read more…] about What Is Pi? Understanding the Number & Symbol
The slope formula helps you determine how steep a line is on a graph. The slope value tells you whether a line rises or falls when you go from left to right and its steepness. It compares how much the line goes up or down (the rise) to how much it moves sideways (the run). [Read more…] about Slope Formula: How to Find the Slope of a Line
The square root of a number is a value that, when multiplied by itself, gives the original number.
In other words, if you know that 6 × 6 = 36, then 6 is the square root of 36. [Read more…] about Square Root Explained
Prime numbers are natural numbers greater than 1 that have exactly two factors: 1 and itself. A prime can be divided evenly only by itself and 1. For example, 2, 3, 5, and 7 are prime numbers because they are evenly divisible by themselves and 1. [Read more…] about Prime Numbers Explained
PEMDAS allows you to solve math problems containing multiple operations. Following the correct order of operations is crucial, otherwise you’ll get the wrong answer! [Read more…] about PEMDAS Explained: Order of Operations in Math
Interval notation is a shorthand way to describe a range of numbers without writing out long inequalities. Instead of listing every number in a set, we use a compact format that shows the smallest and largest values in the range.
Interval notation looks like ordered pairs, but they don’t represent a single point. Instead, they describe a set of numbers between two endpoints.
In this post, you’ll learn what interval notation is, its benefits, how to write it for different cases, and how to represent intervals on a number line. You’ll also see examples of unions and intersections of intervals and how they relate to inequalities. [Read more…] about What Is Interval Notation? A Beginner’s Guide
The quadratic formula is a method for finding the solutions of a quadratic equation. The solutions are also known as the roots or zeros of the quadratic equation because they are the X-values that produce zeros when you enter them into the equation. [Read more…] about Quadratic Formula: What It Is, How It Works & Examples
Scientific notation is a compact way of writing numbers that are too large or too small to be conveniently written in decimal form. It is a shorthand letting us write numbers using powers of 10. Scientific fields such as astronomy, physics, chemistry, and statistics frequently use scientific notation.
Below is an example of shorthand notation:
All three forms of scientific notation are equivalent. In the last format, the E stands for exponent.
In this blog post, you’ll learn how to interpret scientific notation, convert numbers to this format, and how to use it for multiplication and division. [Read more…] about Using Scientific Notation
The Fibonacci sequence is a series of numbers that appears in surprisingly many aspects of nature, from the branching of trees to the spiral shapes of shells. This series is named after the Italian mathematician Leonardo Fibonacci. [Read more…] about Fibonacci Sequence: Formula & Uses
The slope intercept form of linear equations is an algebraic representation of straight lines: y = mx + b. [Read more…] about Slope Intercept Form of Linear Equations: A Guide
Natural numbers are the numbers you use for counting—for example, its definition includes all the positive integers from 1 to infinity. These numbers occur in nature and are the fundamental origins of the number system. Consequently, we see examples of natural numbers all around us in the world. [Read more…] about Natural Numbers: Definition & Examples
The geometric mean is a measure of central tendency that averages a set of products. Its formula takes the nth root of the product of n numbers.
Like the arithmetic mean, the geometric mean finds the center of a dataset. While the arithmetic mean finds the center by summing the values and dividing by the number of observations, the geometric mean finds the center by multiplying and then taking a root of the product. Meanwhile, the harmonic mean is best for averaging rates and ratios. [Read more…] about Geometric Mean: Definition, Formula & Finding
Pascal’s triangle is a number pattern that fits in a triangle. It is named after Blaise Pascal, a French mathematician, and it has many beneficial mathematic and statistical properties, including finding the number of combinations and expanding binomials. [Read more…] about Pascal’s Triangle