Z-test for two means , Z-test for two proportions , T-test for two means , T-test for paired samples , Chi-Square Goodness of fit , and Chi-Square test of Independence. Thanks to a guest writer, I just added a great article about online accounting curricula. You can check it here. Accounting Help November 11th, Found a very informational article about the do's and dont's of Accounting Homework Help. News November 11th, Great changes to improve user experience are coming very soon.
I have written recently many math and stats solvers that I'll be adding to the site. I've been polishing the scripts we already have and this is almost turning into a full time job. As many users are aware, we have had ads for the last few months, and even though I don't like ads, it is the only way to support the site, which is turning into a full time job by now. I'm looking for a more efficient way of using ads so that the site can be ad-supported and it continue being free that way.
Various Statistical Tests November 2nd, More stat tests done. I have finished a t-test for one population mean with unknown population standard deviation and a Chi-Square test for one population variance. Pretty much as the other solvers I have added, they are simple to use: Z-tests October 31st, I've been working on these for a while and I finally finished them.
I added a z-test for one population mean and a z-test for one population proportion. Very user friendly, define hypotheses, and parameters of the test, and a detailed step-by-step calculation is performed.
Histogram Maker October 20th, I just added a working histogram maker. You enter the dataset and the number of bins and a properly scaled histogram is rendered by the script. Bar Graph Maker October 9th, I have added a very cool bar graph maker. You enter the categories, the values associated with each of the categories, and a bar chart rendered by the script.
Mortgage Calculator October 8th, Not exactly the typical calculator we do, but I have had some requests for it, so I added a simple mortgage calculator tool to compute the monthly payment for a mortgage, under basic assumptions without considering PMI and insurance.
New math solver October 4th, I have uploaded a 2x2 system of linear equations solver. Update October 4th, I have updated the pie chart maker script. Confidence Interval Calculators October 2st, I have added two confidence interval calculators. Two more more probability calculators October 1st, We have two more probability calculators.
They are a binomial distribution calculator and a Poisson distribution calculator. Added two more probability calculators September 30th, I have added two new probability calculators, based on a couple of requests I had. They are a exponential distribution calculator and a uniform distribution calculator.
Tips for finding math help September 9th, I have added a new article. Check it out here. Grade Calculator Online June 9th, I have added a correlation coefficient calculator. This time, the script is more user friendly, and checks for errors in the data before processing them. Grade Calculator Online June 4th, I received a whole lot of e-mails asking for a tool to calculate grades. Well, I just did it. More material June 4th, After some time of silence, I'm back. As many of you know, I run this site on my spare time trying to keep it as updated as possible.
I'm very pleased to see the positive effect the math tools we offer in our site are having in the community. Countless e-mails thanking me for the work I put in the site make me want to keep working even harder. The free online math calculator we provide in the site have even been used as references in scientific papers. That is very cool indeed!
I have great plans for the site. From references given by users of our community, they are very reliable.
Summer is over Sept 24rd, Summer is over, and time is back for some math. We have great plans for this year.
Our aim is to offer the best quality free math help, for which reason we will continue adding more and more useful content. We also expect to materialize some very interesting partnerships. More Online Stats calculators May 24rd, As promised, a couple of critical values calculators have been added: This is the first delivery of a series of scripts that will be added.
Coming soon a couple of online calculators for critical values for the z-distribution and the t-distribution. New Article March 8th, I just added an article about math problem solving techniques.
See article List of Calculus Problems March 8th, I found a new site offering sample solved calculus problems: Calculus Problems Scripts Fixed January 30th, We have added more than solved statistics problems Scripts Fixed January 21th, Due to a problem with a configuration file the scripts in the site were not working for a while, now they are working fine. Sorry for the inconvenience. New Tutorial December 18th, A good tutorial about the normal distribution was added.
The normal distribution and the standard normal distribution More Solved Statistics Problems December 7thd, I added a good list of solved statistics problems. Fixed scatterplot tool and added regression line tool November 3rd, I made a few adjustments to the scatterplot module, and added a new regression line tool, to complement the existing tool.
For problems out of my control the site was down for a couple of weeks. We'll be back with new material. Thanks to everyone New section added May 17th, I have found a good collection of free solved math problems and math answers.
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