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 …
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 …
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 …
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, …
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 …
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 …