P-Value

P-Value and How To Calculate it


What Is P-Value & How To Calculate It?

P values are one of the most significant concepts in statistics. In almost every type of statistical test, probability has its integration. Even without these variables, you are not capable of calculating the minor results required in frequency tables.

There are various methods to calculate the p values in statistics. Also, you can calculate this variable from online tools. Among these is the free online p value calculator that is specifically designed by the calculator-online.net site and helps to calculate the probability of an event. Yes, with this online calculator, you can instantly calculate p value as follows:

  • P value for Two-Tailed tests
  • P value for One-Tailed tests
  • Left Tailed p-value
  • Right Tailed p-value 

Anyhow, coming to the point of discussion now! In the following post, we will be elaborating on how to calculate the p value for all hypothetical tests. Let’s focus!

What Is P Value?

In stats:

“The particular value that is used to quantify the statistical importance of the results in all kinds of hypothetical tests is known as the p value”

If you do not get the definition, we better suggest you land on the page of the free online p value calculator on which you will get a detailed definition and methods to calculate p value. Also, you can use the calculator for the sake of calculating the probability for any test in a fragment of seconds.

In actuality, p values represent the possibility of obtaining extreme results rather than the actual outputs. But the only condition that must be met is that the null hypothesis must be true. And these results become less accurate if the p value is less. 

Range of P Value:

The range of p values lies between 0 and 1. And the p value calculator also gives output within the same range.

A p value less than 0.05 (5%) means that the null hypothesis is rejected. 

How To Find The P Value?

There are many methods to calculate the p values. We will resolve an example for your best understanding of the concept. Stay focused!

Statement: (One-Tailed Test)

Suppose you have picked up a ball from a sample received from a production line that has a diameter of 5 cm. Now if the mean and standard deviation of the ball is 6.58 and 1.12 respectively, what would be the p value determination method?

Methods To Calculate P Value:

You can calculate the probability value by using the following methods:

Null Hypothesis:

The mean of the sample is equal to the given population mean.

Ho= = 5

Alternative Hypothesis:

The mean of the sample is not equal to the given population mean.

Ho= ≄  5

One Tail Hypothesis:

Right-Sided:

The mean for the sample is greater than the population mean.

Mathematically;

Ha=>5

Left-Sided:

The mean for the sample is less than the population mean.

Mathematically;

Ha=<5

Using the given significance level and these predicted results, you can easily get the p value for the sample given by using the p value chart. If you want instant calculations to save time, then using the free p-value calculator is the only best option for you. 

In actuality, probability values let you know whether the given data sample has occurred under the null hypothesis or not. The free p value calculator does the same by using the likelihood of the test statistic test which is a great plus. Due to the exact results as calculated by this legitimate tool, professionals and scholars tend to use it for the sake of increasing their statistical computations.

What are Fraction Rules in Maths?

Fraction is the representation of the equal parts of a whole thing. The upper value of the fraction is known as the numerator and the bottom value as the denominator. Numerator represents the selected parts and the denominator indicates the total parts of a whole thing.

For instance you have a pizza and you want to divide it in 4 equal parts now this will be shown in form of fraction as 14.

The rules of fractions are the set of laws to work with them. By keeping these rules in mind, anyone can accurately perform arithmetic operations on the fraction while solving an expression. If the fractions look difficult to you, then visit calculator-online.net and use the free online fraction calculator to do the fractions accurately.

Rules:

Below we have listed some basic rules of fractions:

Rules for Fraction Addition:

Read the following rules to add two or more fractions accurately:

  • Fractions that have different denominators can’t be added directly.
  • For adding fractions, get a common denominator and for this, use the least common multiple that is LCM of the denominators.
  • After doing that, multiply the numerators with the number that you get after dividing the common denominator with the divisors of fractions.
  • Now add the numerators. 

Example: Add two fractions 45 and 32

45 + 32 = 8 + 1510

2310

If you are not getting these rules of fractions, then use an online adding fractions calculator to perform the addition with just a few clicks. 

Rules for Fraction Subtraction:

Go through the following rules to subtract the fractions:

  • If the fractions have uncommon denominators then they can’t be subtracted.
  • For doing the subtraction, you should have a common denominator by taking the least common multiple that is LCM of the denominators.
  • Now, multiply the numerators with the value upon which the divisor divides the common denominator. 
  • Simply, subtract the numerators. 

Example: Subtract two fractions 53 and 32

53 – 32 = 10 – 96

16

To reduce the chances of human error, get the assistance of a free fraction calculator. 

Rules for Fraction Multiplication:

The multiplication of fractions is a simple task but still there are some rules that should be followed.

Follow the below listed rules to perform the correct multiplication of fractions:

  • Numerator is multiplied with the numerator and the denominator is multiplied with the denominator.
  • Numerator can’t be multiplied with the denominator.

Example: Multiply the fraction  54 to 32

54 x 32

Now as we know that the numerator can be multiplied with the numerator.

5 x 3 = 15

And 

The denominator can be multiplied with the denominator.

4 x 2 = 8

Now the result is 

158

To save your time and effort, you can use a fraction calculator online. 

Rules for Fraction Division:

The division of fractions is a bit difficult, but if you remember the rules then it’s a piece of cake. In the division, the first fraction is multiplied with the reciprocal of the second fraction.

Follow these rules:

  • Firstly, change the division sign with the multiplication sign.
  • After changing the sign, write the reciprocal of the second fraction.
  • Now just multiply the fractions as we do in the multiplication of fractions. 

Example: Divide the fraction 54 by 32

54 32

By changing the sign:

54 x 32

Reciprocal of second fraction:

54 x 23

Now perform the simple multiplication:

1012

If you are facing difficulty in understanding the rules, then don’t worry because you can utilize an online dividing fractions calculator that just requires the values and does the rest for you rapidly. 

How to use an Online Fraction Calculator?

Follow the below listed easy steps:

Step 1:

Add the values in the specified fields and choose the number of fractions two or three from the drop down menu.

Step 2:

Select the appropriate arithmetic operators and click on the calculate button.

Step 3:

When you see the calculation is completed, hit the download icon to save the result on your device storage. 

P-Value

Final Words:

Solving the fractions is no doubt a daunting task, but you can make it easy with the help of an online fraction calculator. As it provides the results with the whole derivation. 

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