## 17 Equations that Changed the World

We encounter mathematics on a daily basis, and it has greatly influenced how we perceive the world. Equations are present everywhere and are essential to daily life, from Newton’s Law of Gravitation to the Black-Scholes model used by bankers to forecast the markets. A book titled “17 Equations That Changed the World” was published in …

## 5 Best TI-84 Calculators of 2023 Reviewed

Solving a complicated math problem will always be challenging, but there are tools called graphing calculators that can make finding the solution easier. The right graphing calculator will help understand complex concepts and make getting through the course a tad bit easier.  Several manufacturers offer reliable graphing calculators but don’t always list all the features. …

## A Comprehensive Guide to Limit Comparison Tests

Using the limit comparison test is one of the easier ways to compare the limits of the terms of one series to another and check for convergence. It is different from the direct comparison test and the integral comparison test, both of which are just as well-known. The direct comparison test compares the terms in …

## Step-by-Step Guide To Using A Limit Calculator

Whether you want to verify your answer or skip calculating limits entirely, a calculator will help you. But there’s more that calculators can do for you. Some limits problems cannot be solved algebraically, but a calculator can solve these problems.   Working with limits on a calculator is a little complicated. There are no buttons that …

## What Is The Square Root of 2 And How To Find It

Understanding and working with the square root of 2 is critical to solving algebra and geometry problems. While you can always use a scientific calculator to do it, learning how to calculate the square root of 2 by hand can help when you don’t have one. In this post, we will go over the origins, …

## How to Type Square Root

The square root symbol isn’t a basic mathematical operator, which is why it isn’t on your keyboard, regardless of whether you’re using a Windows machine or a Mac.  However, both of these operating systems make typing square root convenient and uncomplicated.  In this post, we discuss the various ways you can type square root on …

## How to Find the Square Root of a Number

It’s not uncommon for students to come across problems that require finding the square root of a number. While it’s easy to rely on a scientific calculator or a smartphone, learning how to find square root by hand can help understand the concept of square roots at a deeper level.  There are a few different …

## How to Calculate Grade Percentage?

Calculating your courses grade is a useful skill to have. It will help you understand where you stand and how much progress you’ve made. Furthermore, it will help you determine how much more work you need to put in to earn the grade you want.  A 1979 Harvard Business Study found that students that set …

## What Will My Grade Be?

Effective goal setting is one of the most powerful tools students use to ensure exam success. A 2015 Harvard Business study revealed that individuals with goals typically find ten times more success than people that don’t set any goals. Looking through the course of study and setting weekly study goals is an effective strategy to …

31% percent of surveyed students report that finals week is the most stressful time of the semester. However, the exams are rarely the last of a senior’s worries.  To calculate your final grade, you will need to find the sum of your weighted grades. But it’s also possible to calculate the grade you require on …

## How to Use Scientific Calculator

Regardless of whether you’re looking to do plain arithmetic or want to solve complex science and engineering problems, you can rely on a scientific calculator to help. Getting acquainted with a scientific calculator’s functions can be challenging. Going through the manual is an option, but the instructions can sometimes seem needlessly convoluted.  Here’s an easy …

## How To Do Scientific Notation On Calculator

Numbers can sometimes be too large or too small to be expressed normally. If you’re working on a problem involving the weight of the earth or the size of an atom, writing down or entering several zeroes in a calculator is inconvenient at best. Writing scientific notation is one of the easiest ways of expressing …

## What Is A Scientific Calculator

Electronic calculators have been around for centuries, and they’ve gotten progressively better. However, the first scientific calculator was invented and released to the masses only decades ago, in 1968.  These devices are now a common sight in classrooms globally – but what exactly are they? Furthermore, how are they different from basic calculators? I’ve outlined …

## How to Find Standard Deviation On A Calculator

If you’re taking an introductory statistics course, you’ll find out sooner than later that there’s no need for you to calculate standard deviation by hand all the time. While some statisticians-in-training get access to computers in class and use R or SAS to calculate standard deviation, many don’t have that luxury.  But luckily, graphing calculators …

## What Is A Paired T-Test

Comparing the means of two populations becomes easy with the help of two-sample t-tests. The results of these tests help determine if there is a big difference between the means of the samples.  Furthermore, if the test outcome reports a large difference between the means, it means that the data samples are strong, and the …

## When To Use Paired t-Test

A t–Test in statistics is a hypothesis testing method that facilitates the comparison of the results (more specifically, the means) of two scenarios.  These tests are termed “t-Tests” because they boil the sample data down to one number called the t-value. Paired t-Tests are a variation of regular t-Tests, and these tests only work on …

## How To Interpret T-Test Results

In statistics, hypothesis tests enable you to gauge whether the results of a study, experiment, or survey have produced meaningful results. T-tests are of different types and can be used under different circumstances. If you need to compare a mean to a hypothesized value, you can use a simple one-sample T-test. On the other hand, …

## How To Do Fractions On A Scientific Calculator

While scientific calculators are designed to help solve complex engineering, physics, math, and chemistry problems, like business calculators, they display fractions as decimals by default. This means if you enter a fraction like ¾ on the calculator, the display will read 0.75. However, most scientific calculators have a feature that enables you to display fractions …

## How To Use Log On Scientific Calculator

Logarithms are easy to understand. They are functions that help you determine what exponents must be multiplied into a specific number. As you move on to learn advanced math, you will need to use scientific calculators to calculate log values quickly.  These calculators are very different from basic and business calculators and come loaded with …

## How To Calculate P Value From T-Test By Hand

T-tests are some of the most commonly applied statistical tests in all of math. If you pick up any research paper, chances are, you will see p-values in it.  Learning to do T-tests by hand and finding the p-value (with the help of a T-distribution table) will help you understand how hypothesis testing works much …

## What is a T-Test?

A T-Test is a hypothesis test that we use in statistics to compare two data sets’ respective means. It is a kind of inferential statistics. It concludes if there is a significant difference between the two groups’ means, which otherwise could be related to a few attributes. For example, you can use a t-test to …

## When to Use T-Test vs. Z-Test

A hypothesis is an assumption of a scenario that is rejected or accepted based on the test result. There are two kinds of hypothesis testing method: Parametric test: variables are measured on an interval scale Non-parametric test: variables are measured on an ordinal scale There are two types of tests in a parametric test – …

## How To Do T-Test?

In this article, we will achieve a clear understanding of  The definition of t-test, different terminologies/ factors involved in conducting t-test like mean, variance, standard deviation, significance level, degree of freedom, t-value, and p-value, assumptions for t-test calculation, different kinds of t-tests, how to do the test for each kind of t-test, and how we …

## T-TEST CALCULATOR WITH STEPS

In this article, we will get a piece of in-depth knowledge on: What is a T-test, and what are the different kinds of the t-test? What are the steps of calculating a t-test? How can you calculate the t-test using our t-test calculator? What is a T-test? In statistics, a t-test is used to compare …

## Best Graphing Calculators 2021: In-Depth Buyer’s Guide

If you are a parent of a high school student, your child’s math teacher is probably requesting a mandatory unique calculator. Regardless if the math is Algebra, Geometry, or Trig, a specific calculator will be required for the student to complete the work successfully. At first, you may be confused as to which calculator is …

## What Was Used Before Calculators?

Humans have been counting, calculating, and charting since the beginning of time. At first they used their fingers and then such things as piles of pebbles, bundles of twigs, and simple mechanical devices like the revolutionary abacus. It is hard to imagine a time when we all didn’t have a calculator in our school bag …

## Are TI Graphing Calculators Obsolete?

Texas Instruments (TI) graphing calculators are virtually unchanged over the years, leading many industry observers to wonder if they are now obsolete. Judging from their enduring popularity, however, it seems that these reliable dinosaurs are here to stay, at least for the foreseeable future. A Throwback to the Pre-Digital Era The TI graphing calculator is …

## TI Graphing Calculator: Profit Margins

The TI Graphing Calculator: A dominantly stable, profitable product. In 2009 the Wall Street Journal ran an article which describes that approximately 80% of the graphing calculators sold in the USA were made by Texas Instruments (TI). By contrast, competitor Hewlett-Packard (HP) had less than a 5% stake in the graphing calculator market. The story …

## History of Graphing Calculators

Texas Instruments SR 10 It’s easy to forget, when the calculators that are sold in big-box stores across the land, blister-packed in plastic, can perform the most ferociously complex calculations — and display the results in the form of a clear, easily-read graph — that there was a time when even a calculator that could …

## Graphing Explicit vs Implicit Equations

There has been a lot of interest in licensing meta calculator. Our company, Engaging Edu, has licensed various IP over the last few years, and, of late, our scientific/graphing calc  has been in hot demand–whether it’s from companies that want to buy it or companies that want to license it. A recurring issue in the process …