Also, I found this interesting article about the advantages of staring with Algebra early in life. Statistics Calculators August 17th, I have added a couple of algebraic solvers for arithmetic sequences and geometric sequences. Statistics Calculators August 15th, Z-scores are the way we compute normal probabilities, as any general normal distribution can always be reduced to a standard normal distribution. Check out this Z-Scores Calculator. Statistics Tutorials August 2nd, I have found two excellent tutorials one about hypothesis testing , and the other one about statistics and parameters.
Both are great reads. Cramer's V Calculator December 25th, The idea of "effect size" is very relevant in statistics. If often happens that a test statistics is significant, but the association has no practical meaning.
This is because a extremely large sample size alone can find significant n extremely small effect. Cramer's V is a statistic that assess the effect size or practical significance of the association between nominal variables. Critical Correlation Calculator November 29th, Typically found in special tables, here you have a critical correlation calculator. Geometry Solvers November 28th, Lots of people were asking for geometry solvers and here they are.
I have started a new section for Geometry and I'll be adding more solver on a continuous basis. For now, here I leave for you a area and perimeter of a circle calculator , and an area and volume calculator for cylinders Polynomial Operations Calculator November 25th, This one is a solver that user were clamoring for: Let me introduce our Polynomial Operations Calculator , with which you can add, subtract and multiply polynomials, with the solution shown step-by-step.
Also, we have started with MathQuill, and excellent option for enhancing the input of math. Absolute Value Calculator November 23th, We expand even more our Algebra series with some more basic solvers, in this case, a absolute value calculator. Algebraic Expression Calculator November 19th, New solver in our Algebra series, now I have added a solver that evaluates all sort of algebraic expressions that can include any kind of operation sum, subtraction, multiplication, division , numbers, fractions, trigonometric functions, exponential functions, powers, roots, etc.
Check our Algebraic Expression Calculator. Fraction Operations Calculator November 19th, Continuing the series of Algebra solvers, I have added a solver that calculates operations between fractions and shows all the steps.
Depending of the operation required it conducts the appropriate steps to reach the final fraction result, in reduced form. Check out our fraction operation solver. Function Grapher November 17th, I have made a new function grapher to replace the old flash grapher we had. This time, I used the Google Chart format, that looks more modern and goes along the trend of JS charts. Fraction Reduction November 13th, I get a lots of requests for this one, so here it goes. This is a fraction reduction tool fraction-reduction-lowest-terms.
Next Algebra Solver in our series November 12th, This time, I added a greatest common divisor , or as it usually known as greatest common factor calculator. I took care to provide as much detail as possible in the calculations shown by the solver. I have added a prime decomposition calculator , you type in a positive integer number and the solver tell you in a detailed way what is its prime decomposition.
New Site Design September 8th, I am very pleased to announce that we have rolled a new site design, with a much improved mobile functionality. More Math Cracks January 31th, This time I decided to write on functions and how to deal with them. Another Math Article January 20th, Another article. I'll be uploading them periodically. This next first Math Crack is about an easy explanation of derivatives. Math Cracks January 5th, I finally started a project that I have been wanting to undertake for a while.
It is the Math Cracks, which is the way I call to this short tutorials that attemp to explain hard math concepts in simple terms, step-by-step.
The first Math Crack of the series is Integration by Parts. Site upgrade April 21th, A site update is coming soon. I will be changing the layout a bit so that to keep the solvers in a more organized way and the articles will be organized rather in blog format.
I will be adding a complete set of Algebra solvers, so stay tuned. More solvers February 4th, A couple of tutorials and solvers were added: Math Articles Minimum Sample Size December 7th, I have added a minimum sample size calculator for mean and proportion Many stats calculators December 5th, After long working hours, I've finished all the solvers required to cover all basic statistics topics.
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