# Articles

## How to Construct and Interpret Scale Drawing

This article will learn how to construct and interpret Scale Drawing in a few simple steps. Step by step guide to construct and interpret Scale Drawing Since it is not always possible to draw the actual size of real objects on paper, we use scale drawings to show them on paper. A scale is a drawing that shows a real object in a way that its size is accurate and has been reduced or enlarged by a certain amount. The scale is shown as the length in the drawing, matching length on the real thing, and a colon (“:”) between them. The scale can actually be thought of as a fraction,...
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## How to Find Missing Angels in Quadrilateral Shapes

In this article, you will learn how to find missing angles in Quadrilateral shapes. Step by step guide to Find Quadrilateral angles The following diagram shows a quadrilateral \(ABCD\) and the sum of its internal angles. A perfect quadrilateral is a surface obtained from the intersection of four lines and their extension. The sum of the internal angles of each triangle is \(180\) degrees, and since each quadrilateral is made up of two triangles, the sum of the internal angles of each quadrilateral is \(360\) degrees. Thus,...
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## How to Understand Random Sampling and Variation in Samples

In this article, you will learn more about Random Sampling and Variation in Samples and how to choose a sample using systematic random sampling. Step by step guide to Understanding Random Sampling and Variation in Samples Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen. In this case, a randomly selected sample is an unbiased representation of the total population. In this method, the required people or objects are randomly selected from the list of the population that has been numbered and prepared for this...
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## How to Find Vertical Angles

In this article, you will learn how to Find Vertical angles in a few simple steps. Step by step guide to Finding Vertical angles The intersecting lines form an \(X\)-shape, and the angles on the two opposite sides of this \(X\) are called vertical angles. The two vertical angles are always the same size and they have the same vertex. The bisector of two vertical angles makes a straight angle. In the diagram at the right, lines  and are straight: Angle\(1\)+ Angle\(3\)=\(180\)(because it is a straight angle)Angle\(2\)+ Angle\(3\)=\(180\)(because it is a straight...
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## How to Find Probability of an Event

In this article, you will learn how to find the Probability of an Event in a few simple steps. Step by step guide to Finding Probability of an Event Probability is commonly used to describe the mind's attitude toward propositions that we are not sure are true. The statements in question are usually in the form of"Does a particular event occur?" And our minds' attitude to the form"How confident are we that this will happen?" Is. Our confidence level can be described numerically, which takes a value between \(0\) and \(1\) and we call it probability. The more likely an event...
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## How to Find Measures of Variability

In this article, you will learn how to Find Measures of Variability in a few simple steps. Step by step guide to finding Measures of Variability Measures of Variability allow us to understand how far apart the data points are from the distribution center. Also, Measures of Variability give us descriptive statistics and summarize our data. The three main measures of variability: Range, Variance, and Standard Deviation. The range \((R)\) of a data set is the difference between its largest and smallest values \(R=xmax-xmin\). The range is one of the best scattering indices for...
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## How to Make Inferences from Data

In this article, you will learn how to make inferences from data in a few simple steps. Step by step guide to Make Inferences from Data In the research process, after collecting data, the next step involves analyzing the data. The statistical analysis process helps the researcher to extract the required information from the initial data and to generalize the results if necessary. ‌Analyzing information as part of the process of the scientific research method is one of the basic foundations of any study and research. The first step you need to do after collecting data is to review and...
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## How to Find Probabilities using Two-Way Frequency Tables

In this article, you will learn how to find probabilities using Two-Way Frequency Tables in a few simple steps. Step by step guide to Find Probabilities using Two-Way Frequency Tables The information obtained from research is often a mass of raw, meaningless, and disordered information that makes it impossible to draw any conclusions or interpret it. Therefore, for any type of data analysis, it is necessary to classify the data according to a logical order to make it meaningful and interpretable. Classification of data requires the step-by-step calculation of the amplitude of changes,...
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## How to Solve Unknown Angles

In this article, you will learn how to solve unknown angles in a few simple steps. Step by step guide to Solve for unknown angles To determine the measurement of an unknown angle, we must identify the angle relationship(s), and then model the relationship with an equation that will yield the unknown value. If the sum of the measurements of two angles is \(90^{\circ}\), angles are complementary angles and one is the complement of the other. If two complementary angles are adjacent to each other (have a vertex and a common side), the other two non-common sides will form a right...
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## How to Find the Measures of Central Tendency

In this article, you will learn how to find the Measures of Central Tendency in a few simple steps. Step by step guide to Find the Measures of Central Tendency Measures of Variability allow us to summarize an entire data set with a single value. Mean, Mode, and Median are all three examples of Measures of Central Tendency. Mean: It means average, and to calculate mean, we divide the sum of the numbers by the number of observations. Can be used with discrete and continuous data. Median: The middle value that separates the higher half from the lower half. Numbers are arranged in...
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## How to Construct Triangles

In this article, you will learn how to construct triangles in a few simple steps. Step by step guide to Construct triangles A triangle is a simple closed curve or polygon which is created by three line segments. In fact, a triangle is formed when three straight lines collide with each other in such a way that if both lines intersect. Each triangle has three sides, three angles, and three vertices. A triangle can be drawn in the following positions with a ruler, protractor, and compass: Having the size of two sides and the angle between them: First, we draw an angle equal to...
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## How to Solve Linear Equation and Inequality Word Problems

In this article, you will learn how to solve Linear Equation and Inequality Word Problems in a few simple steps. Step by step guide to Solve Linear Equation and Inequality Word Problems Linear equations are relations that describe a straight line. In linear equations, the quantities \(x, y\) don’t have any power or radical. The general form of this type of equation is as follows: \(ax+b=0\) where \(a\) and \(b\) are constant numbers \(a≠0\) and \(x\) is also unknown. Linear inequalities are very similar to linear equations and in them, the power of the variables is not...
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