The Distance Formula is a variant of the Pythagorean Theorem that you used back in geometry. To calculate the distance between two points (x1, y1) and (x2, y2), all that you need to do is to insert the values asked in the formula. The distance formula can be used to find solutions to many real-world problems. … [Read more...]

## Quadratic Formula

The simplest way to solve "ax2 + bx +c = 0" or any other quadratic equation is by factorizing the equation and set each factor equal to zero and then simplify. However, most of the times the quadratic equations are messy and doesn't factor at all. When factoring is not a solution then the best way to solve any quadratic equation is using Quadratic Formula which will always … [Read more...]

## Slope Formula

It gets annoying to draw a graph every time to find out the slope of a line as it requires you to draw an accurate graph and then calculate the slope of the line. However, it can be avoided by using the "Slope Formula" which is the general formula used to find out the slope of the line. … [Read more...]

## Mean, Median and Mode

There are several ways to describe the characteristics of a set of data. The Mean, Median and Mode are all called measures of central tendency. These measures of central tendency and range are described below with one example each. The Mean of a set of data describes their average. To calculate the mean, add all of the numbers and then divide by the number of items in the … [Read more...]

## Standard Deviation Formula

The Standard Deviation is a measure of the spread of scores within a set of data. Mostly, we want to know about the standard deviation of a population. However, as we are often presented with data from a sample only, we can estimate the population standard deviation from a sample standard deviation. These two standard deviations sample and population standard deviations are … [Read more...]