This is an efficient device for performing calculations involving quantities with known or estimated uncertainties. This is also popularly known as the error propagation or the uncertainty propagation. It facilitates the computation of uncertainties in one of the two ways: The most probable uncertainty, also known as the standard error (or uncorrelated uncertainty), that is …
The T Distribution also known as the student’s t-distribution. It is widely used while making any sort of assumption about a mean when we do not know the standard deviation. In the field of probability and statistics, the normal distribution can be identified as a bell-shaped distribution, whose arithmetic mean is μ and the standard …
The Coefficient of Variation Calculator is an online tool that can be used free of cost. It displays the ratio of the standard deviation to the mean. In the subject of Statistics, the coefficient of variation is defined as the ratio of the standard deviation to the mean. It is mostly used to compare the …
The Interquartile Range Calculator is a free to be used tool, made available online in order to help you display the interquartile range (IQR) for any given dataset. In traditional Statistics, the interquartile range formula is used to measure the variability, which is entirely based on dividing the given data set into quartiles. The values …
Imagine you are tossing an unbiased coin. Every time you toss, you need to note down the result. For an unbiased coin with sufficiently large number of trials (of heads and trails), you should get roughly 50% heads and 50% tails that is a 50-50 possibility. However, what if the coin is biased – say …
This t distribution calculator is a very-very handy tool that gives you results in a fraction of seconds. This really helpful calculator makes it easy to compute cumulative probabilities, based on t statistics. You can also compute t statistics based on cumulative probabilities. A standard probability value should be between 0 to 1, where 0 …
The Percentage error is a measurement of the discrepancy (or deviation) between an observed and a true, or accepted value. While measuring data, the result often varies from the true value. This could be because of an error such as a wrong input or empty field. Error can arise due to many different reasons that …
Most of the surveys that are conducted for market research purposes are based on the information that is collected from a small population (called ‘Sample’) as opposed to the full population (a census). As the sample is only a replica or a representation of the full population, it is likely that some error will be …
A p-value (probability value) is a value used in statistical hypothesis testing (especially for research methodology) that is intended to determine whether the obtained results are significant or not. In statistical hypothesis testing, the null hypothesis is a type of hypothesis that states a default position, such as there being no association among groups, or …
A Poisson experiment is something that examines the number of times an event occurs during a specified interval. The interval could be literally anything – a unit of time, length, volume, etc. We might, for example, ask how many customers visit a restaurant each day, or how many home sixes are hit in a tournament …
