Statistics is a higher education subject. The students who select statistics as their course subject find several difficulties while calculating the problems of statistics.

Some students solve the required problems of statistics easily. While other students have to face difficulties during the calculation of statistical problems.

Statistics is a subject that contains several topics that have larger calculations. Such as sum of squares, **standard deviation**, variance, quartiles, probabilities, central tendencies, and many other topics have larger calculations.

Students become afraid while solving statistical calculations. They have to make tables for the calculations of frequencies, class intervals, and other terms while solving the problems.

Some students become afraid due to the larger calculations of statistical problems and decide to change the subjects.

For changing the subject either they join a new department of study or decide to skip the academic year. By doing this many students skip education due to the gap of studies and start doing smaller business.

To help the students there are several statistical tools available online. These tools guide the students by their content and give a step-by-step result of the problems.

By using these tools students can easily solve any problems, assignments, and prepare themselves for exams for the purpose of getting good grades.

In this post, we will list the three best statistical websites that are very beneficial for students.

## 1. Allmath.com

AllMath is an educational website that provides several tools that are helpful for students to solve their problems. This source contains various statistical tools that provide a step-by-step solution to the statistical problems.

Here are some statistical tools that are offered by this site.

- Sum of squares calculator
- Coefficient of variance calculator
- Correlation coefficient calculator
- Variance calculator
- Covariance calculator
- Mean calculator
- Mode calculator
- Arithmetic sequence calculator
- Geometric mean calculator
- Median calculator

The statistical tools that are offered by this source also provide content of the required topic from where students can easily understand the given topic. The results can be copied, downloaded, or printed from this site.

AllMath offers some other educational tools along with statistical like mathematics, physics, chemistry, and many others. The students who want to calculate the solution of the required problem have only put the question in the required box and click the calculate button, the result will be in front of them in a few seconds.

The students who are not familiar with the language of English can change the language of the tool. The whole content and the result must be changed into the selected language. Here are some languages that are offered by this site.

- Spanish
- German
- Russian
- Finnish
- Polish
- Indonesian
- Italian
- Turk

Some other languages are also available on this source. This website is free for the students to solve any kind of problem without any payment. Students can also read blogs for grabbing all the concepts of the given articles.

## 2. Standarddeviationcalculator.io

A standard deviation calculator is an online tool for calculating the standard deviation of the given set of data. This tool provides a solution to the given question in no time. Students can solve their statistical assessments by using this site.

The standard deviation calculator solves the problems for two types of data.

- Sample
- Population

This tool follows different formulas for both methods to solve the given sample or population data. For solving the statistical question, students have to put comma-separated values. Then choose which kind of data is either sample or population.

Then click on the calculate button below the input box, the result will come in a few seconds. Students can read the content of this tool to understand the basics of this topic. Along with standard deviation, this tool offers some other results like:

- Variance
- Mean
- Sum
- Sum of squares
- Differences
- Square of differences

Students can also copy, print, or download the output of the given question. They can also use this tool for the preparation of exams as this site covers almost everything about standard deviation. This tool is free, students can solve unlimited problems by using this tool without any premium charges.

Students can remove the previous input and enter the new input or simply click the reset button to enter the new input. This tool gives results even for the larger data set.

## 3. Criticalvaluecalculator.com

A critical value calculator is an online tool used to find t and z critical values. The critical value is a statistical topic and students face difficulties while solving the problems of this topic. This tool is very helpful for solving the critical values of the given input.

The critical value calculator is used to solve two kinds of values.

- T critical value
- Z critical value

This tool provides three results for the given values of degree of freedom and significance level.

- Right tailed probability
- Left tailed probability
- Two-tailed probabilities

The content of this tool provides complete guidance about critical values. Students can use this calculator if they have to solve the critical values without a table. While if the problem is given to use the critical value table to find the result, then they would use the table that is also available on this tool.

Four kinds of tables are offered by this tool.

- T distribution table for one tail
- T distribution table for two tail
- Z table for right-tailed
- Z table for left tailed

The critical value calculator is free to use to calculate z and t critical values for left-tailed, right-tailed, and two-tailed probability. Students can solve any kind of question by using this tool either by using a calculator or tables.

Preparation for the test and presentation of this topic can be done by using this tool because it provides almost every basic knowledge about critical values.

## Summary

The above-mentioned list of statistical tools is very beneficial for solving various kinds of statistical problems. Students can use these sites to cover almost every complex topic of statistics. Like variance, critical values, standard deviations, mean, median, mode, and many other topics should be covered by using the above tools.