Z Score Calculator is an easy-to-use and 100% accurate online tool to calculate the Z-Score. Just enter the row score, population mean, standard deviation and press the "Calculate" button. As a result, the tool will display the Z-score result on your screen. Also, it's very fast and efficient. The manual calculation is a bit confusing and becomes very difficult when we deal with large numbers. So, use our tool to save your time and effort.
In simple words, the Z score denotes the difference between the data points of raw scores from the mean value. You can get the number of standard deviations of a data point above the mean value. Hence, it is also known as Standard Score, Normal Score, or Z-Value.
Now, as you have learned about the Z Score let's understand how you can calculate it.
According to statistical analysis, we use this formula to calculate the Z Score:
Z = Z Score
x = Raw Score
μ = Mean
σ = Standard Deviation
Hence, in order to calculate the Z score or standard score, firstly, you need to get the value of raw score, mean and standard deviation. After getting those values just put them in the formula and you will get the Z-score result easily.
Let's take an example.
Suppose, we have the following values:
Raw score, x = 20
Mean, μ = 15
Standard Deviation, σ = 5
Put these values in the formula and evaluate the expression.
Finally, we get Z Score value = 1.
Z Score Calculator takes all the required values from the user and determines the final result instantly. The same statistical formula is being used in our tool.
Follow these simple steps below to use the tool without any problem: