Cara Menghitung Standar Deviasi di Excel

>Hello Sohib EditorOnline, if you are reading this article, it means that you are looking for ways to calculate standard deviation in Excel. Excel is a powerful tool that can help you analyze and interpret data. One of the most commonly used statistical measures in Excel is the standard deviation. In this article, we will provide you with a step-by-step guide on how to calculate standard deviation in Excel.

What is Standard Deviation?

Before we dive into the calculations, let’s first understand what standard deviation is. Standard deviation is a measure of how spread out the data is in a set, in other words, it measures the amount of variation or dispersion from the average. A high standard deviation indicates that the data points are spread out widely from the mean, while a low standard deviation indicates that the data points are clustered around the mean.

What is the Formula for Standard Deviation in Excel?

The formula for calculating the standard deviation in Excel is:

Formula	Description
=STDEV(number1,[number2],…)	Returns the standard deviation of a sample set of data.
=STDEVP(number1,[number2],…)	Returns the standard deviation of an entire population set.

How to Calculate Standard Deviation in Excel

Now that we know the formula, let’s go through the steps on how to calculate standard deviation in Excel.

Step 1: Enter Your Data into Excel

The first step is to enter your data into Excel. For this example, we will use a sample set of data:

Data
5
10
15
20
25

Step 2: Calculate the Average

The next step is to calculate the average of the data. To do this, use the AVERAGE function:

=AVERAGE(A1:A5)

The result should be 15.

Step 3: Calculate the Deviations

The next step is to calculate the deviations for each data point. To do this, subtract the average from each data point:

=A1-$A$6

=A2-$A$6

=A3-$A$6

=A4-$A$6

=A5-$A$6

Make sure to use absolute referencing to lock the cell containing the average ($A$6) so that it doesn’t change when you copy the formula to other cells.

Step 4: Calculate the Variance

The next step is to calculate the variance, which is the average of the squared deviations. To do this, use the VAR function:

=VAR(A1:A5)

The result should be 62.5.

Step 5: Calculate the Standard Deviation

The final step is to calculate the standard deviation. To do this, use the STDEV function:

=STDEV(A1:A5)

The result should be 7.90569415.

FAQ

1. What is the difference between STDEV and STDEVP?

The STDEV function is used when you have a sample set of data, while the STDEVP function is used when you have an entire population set of data.

2. How do I use absolute referencing?

To use absolute referencing, add dollar signs ($) in front of the column and row references in a cell address. For example, $A$6 will always refer to cell A6, regardless of where the formula is copied.

3. How do I copy a formula?

To copy a formula, select the cell containing the formula, then click and drag the fill handle (the small box in the bottom-right corner of the cell) to the cells where you want to copy the formula. Alternatively, you can copy and paste the formula using the keyboard shortcuts Ctrl+C and Ctrl+V.

4. What does the variance indicate?

The variance indicates how much the data points vary from the mean. A high variance indicates that the data points are spread out widely from the mean, while a low variance indicates that the data points are clustered around the mean.

5. Can I use the STDEV function for a range of cells?

Yes, you can use the STDEV function to calculate the standard deviation for a range of cells. Simply enter the range of cells instead of individual cells in the function.

Conclusion

In conclusion, calculating standard deviation in Excel is a simple process. By using the STDEV function, you can quickly and easily calculate the standard deviation for a set of data. Remember to enter your data into Excel, calculate the average, calculate the deviations, calculate the variance, and finally, calculate the standard deviation. With this knowledge, you can analyze and interpret your data more effectively.

Cara Menghitung Standar Deviasi di Excel