# Math

• The density, mass and volume triangle is as follows: So if you wanted to work out the density, you would cover up density in the magic triangle to give: Density = Mass/Volume (since mass is above volume) So if you wanted to work out the... ### The Density, Mass and Volume Magic Triangle: How to Calculate Density of a Solid Shape

0

• Regression equations are frequently used by scientists, engineers, and other professionals to predict a result given an input. These equations have many applications and can be developed with relative ease. In this article I show you how easy it is to create a simple linear regression equation from a small set of data. ### How to Create Your Own Simple Linear Regression Equation

2

• The article is written in rather technical level, providing an overview of linear regression. Linear regression is based on the ordinary list squares technique, which is one possible approach to the statistical analysis. Both univariate and multivariate linear regression are illustrated on small concrete examples. In addition to the explanation of basic terms like explanatory and dependent variables, we will see how to interpret results obtained by a regression analysis. ### Univariate and Multivariate Linear Regression

9

• Modern day calculator dependence is enabling a consensus to alter long-known, tried and tested, math guidelines, such as PEMDAS/BODMAS, and is applying them them as strict rules instead. My article proves that 8 ÷ (2 + 2) = 1 with or without calculators. ### 8 ÷ 2(2 + 2) = 1 and Only 1. The Sad Legacy of Calculator Dependence.

2

• A composite shape or compound shape is a shape that is made from other shapes such as two rectangles (L-shape) or a triangle and a rectangle. If you are going to calculate the area of a composite shape then you need to break up composite shape into... ### How To Calculate The Area Of A Composite Or Compound Shape (rectangles, triangles, circles).

1

• ppm is mentioned in many user manual specifications sections of appliances, gadgets, and materials. Why should this be? Why not use per cent (%) or even decimal fractions? ppm is important for accuracy and for safety reasons and is explained here along with conversion methods between the parameters. ### 1ppm – Have You Ever Wondered What 1ppm Means?

0

• The grid method is a great fool proof method to help you with multiplication. As long as you follow these simple steps and have good knowledge of place value and your timetables this is a great method ### Math Help: How Do You Multiply Using the Grid Method? Partition the Units, Tens and Hundreds to Make It Simplier

2

• Once I was preparing to take a difficult standardized test, which evaluates math and logic skills for university entrance. It was an online exam with a timer and I had to make calculations without using a calculator. Techniques of fast mental math discussed here became a true godsend for me! ### How to Calculate Quickly Without a Calculator

8

• Game Theory is one of the most fascinating branches of mathematics with tons of applications to fields ranging from the social sciences to the biological sciences. In this article, we will look at some basic examples of game theory and its application to real-world situations. ### What Is Game Theory? A Basic Introduction and Example

14

• To calculate the 3 point moving averages form a list of numbers, follow these steps: 1. Add up the first 3 numbers in the list and divide your answer by 3. Write this answer down as this is your first 3 point moving average. 2. Add up the next 3... ### How to Calculate the 3 Point Moving Averages from a List of Numbers and Describe the Trend

0

• The Viral Equation 8 ÷ 2(2 + 2) has only one answer and that is 1 not 16. PEMDAS and BODMAS are being incorrectly applied to this equation by the proponents of 16 as a result, probably due to calculators and spreadsheets applying incorrect rules and not being challenged many years ago. ### 8 ÷ 2(2 + 2) The Viral Equation Has Only One Answer and That Is 1 Not 16

0

• Here you will be shown to work out the area and perimeter of a C shape. A C shape is a compound shape made up of 3 rectangles. Make sure you know how to find the area and perimeter of an L shape before you attempt this lesson on C shapes. To work... ### Compound C Shapes: How to Calculate the Perimeter and Area of a C Shape.

0

• This hub is all about calculating lottery probability or odds. In order to make it relevant, I decided to base it on the Grandlotto 6/55, the lottery game with the biggest prize money here in the Philippines. There will be two different cases in the hub: the probability of winning the game with all six numbers matching, and the probability of having n numbers matching. ### How to Calculate Lottery Probability

32

• Speed, distance and time can be calculated using a magic triangle. D (the distance) goes in the top of the triangle, S (speed) goes in the bottom left of the triangle and T (time) goes in the bottom right of the triangle. If you want to calculate... ### Using the Magic Triangle for Speed, Distance and Time (Compound Measures)

3

• Do you have problems converting between cups, pints, quarts, and gallons? Many people do. Learn a method of conversion that will help you to remember the units and will give you a visual way to go about converting between units. This method is useful for children and adults. ### How to Remember Customary System Measurement Conversions: Cups, Pints, Quarts, Gallons

9

• Pythagoras and trigonometry (basic) both work in right angled triangles. In this hub you will be shown how to choose the correct one. Pythagoras is used when you have a right angled triangle and you need to work out one of the missing side... ### Pythagoras vs. Trigonometry—How to Know When to Use Trig or Pythag in Your Math Exams

0

• Finding the modal class from a grouped frequency table is actually quite easy to do. All you need to do is to look for the group that has the highest frequency. This is because the mode is the number that comes up the most times. Make sure you write... ### How to Work out the Modal Class Interval from a Grouped Frequency Table

1

• When solving division problems, it can be challenging for students to learn how to interpret the remainder. With these 40 example division problems, you can learn more about four possible ways to interpret the meaning of the remainder. ### Interpreting the Remainder: 40 Example Division Word Problems for Student Practice

0

• Al-Biruni a pioneering Muslim scientist figured out a truly remarkable and ingenious method to calculate the radius of the earth (and subsequently its circumference etc.). This was very simple yet accurate requiring just four measurements in all to... ### Al-Biruni's Classic Experiment: How to Calculate the Radius of the Earth

22

• This article shows you how to multiply fractions in four easy steps. How do you multiply mixed numbers? What is an improper fraction? This article, which includes a short video, will answer all these questions and leave you with the knowledge and confidence to multiply any fractions. ### How to Multiply Fractions in Four Easy Steps

3

• A basic discussion on the null hypothesis, z-scores, and probability. This article includes examples of the null hypothesis, one-tailed, and two-tailed tests. A coin is tossed and comes up tails ten times: is this just random chance, or is an unfair coin being used? Learn when to reject the null hypothesis: if the probability (P) is less than the chosen significance level, the null must be rejected. 4

working