Thet-test for dependent means (also called a repeated-measurest-test, paired samplest-test, matched pairst-test and matched samplest-test) is used to compare the means of two sets of scores that are directly related to each other. So, for example, it could be used to test whether subj...
This is a type of two-sample test used to compare two sample means, where a large t-value suggests that the samples are very different, and a small t-value suggests that they are similar. Similar to the one-sample t-test, individuals who first encounter this test may wonder about the ...
If you don’t use your car much and clock up only a low annual mileage, you’re likely to get cheaper car insurance than someone who drives a lot more. That’s because spending more time on the road means there's a greater chance of being involved in an accident. High mileage drivers...
Use our free mortgage calculator to estimate your monthly mortgage payments. Account for interest rates and break down payments in an easy to use amortization schedule.
Performs unpaired t test, Weldh's t test (doesn't assume equal variances) and paired t test. Calculates exact P value and 95% confidence interval. Clear results with links to extensive explanations.
Compare college savings plans Try the 529 State Tax CalculatorInformation and interactive calculators are made available to you as self-help tools for your independent use. This calculator is for hypothetical use only and depends on the information you provide. The calculations rely on a number of...
Babies and children are always unique – they grow at their own pace. However, monitoring your baby’s growth can help indicate a healthy development. Healthcare providers can use growth percentiles to judge if your baby’s development is on track.Growth percentiles are used to compare your bab...
Here is an example of a chi-square calculator tocompare expected and observed frequencies. You can use this page to calculate the P value from chi-square values of your choice (and the correct degrees of freedom). Only positive values of chi-square are appropriate. Learn more aboutinterpreting...
Use this refinance calculator to see if refinancing your mortgage is right for you. Calculate estimated monthly payments and rate options for a variety of loan terms to see if you can reduce your monthly mortgage payments.
As you compare the compound interest line to those for standard interest and no interest at all, you can see how compounding boosts the investment value. So, how important is compound interest? Just ask Warren Buffett, one of the world's most successful investors: “My wealth has come from...