The variance**,** standard deviation and mean deviation are closely related to each other. While working with large Microsoft Excel, now and then, we have to calculate the mean variance and standard deviation. Calculating Standard errors in Excel is an easy task. In statistics, standard deviation calculates a group of data by which you measure how the calculation is spread out from an expected or average value. It is defined as the square root of the dispersion or variance in a frequency distribution. Today, in this article, weâ€™ll learn three quick and suitable steps to calculate mean variance and standard deviation in Excel effectively with appropriate illustrations.

## Introduction to Mean Variance and Standard Deviation

In this portion, I will introduce to you the Mean, Variance, and standard deviation.

**Mean**

The average of a set of data is called the mean. The formula of Mean in Excel is,

Mean = **=AVERAGE(data_range)**

**Variance**

The dispersion between numbers in a data collection is measured by variance. The variance represents the deviation of each integer in the set from the mean. The formula for calculating the variance is,

Where

- Î¼ is the arithmetic mean.
- X is the individual value.
- N is the size of the sample.
- Ïƒ is the variance.

**Standard Deviation**

The standard deviation of a dataset is a statistic that indicates its dispersion in relation to its mean. The **standard deviation** means the square root of the variance. The formula for calculating the **standard deviation** is,

**Standard Deviation = Sqrt (Variance)**

When comparing sets of data with the same mean but distinct ranges, determining the variation between each data point relative to the mean is useful. In finance, the standard deviation is frequently used. Itâ€™s used to calculate an investmentâ€™s yearly rate of return. The bigger the disparity between each price and the mean, the larger the price range is revealed by a higher standard deviation. The standard deviation of a volatile stock is high, but the standard deviation of a blue-chip stock is low.

## How to Calculate Mean Variance and Standard Deviation in Excel: 3 Easy Steps

Letâ€™s assume we have an **Excel **large worksheet that contains the information about several **students** of **Armani School**. The name of the **students,** the **Identification Number**, and the **securing marks in Electrical and Electronics Engineering(EEE)** are given in Columns **B, C**, and **D **respectively. We can easily calculate the **Mean, Variance, **and **Standard Deviation **in **Excel **by using **COUNTA****, ****AVERAGE****, ****VAR****, ****STDEV****, ****SQRT**** Functions**, and so on. Hereâ€™s an overview of the dataset for todayâ€™s task.

### Step 1: Calculate Mean Value in Excel

To calculate the standard deviation, firstly, we will calculate the **mean **and **variance**. From our dataset, we can easily calculate the **mean **and **variance**. Letâ€™s follow the instructions below to calculate the **mean **and **variance**!

- First of all, select a cell. We will select cell
**D15**for the convenience of our work.

- After selecting cell
**D15**, write down the**COUNTA**function in that cell. The**COUNTA**function is,

`=COUNTA(D5:D14)`

- Hence, simply press
**ENTER**on your keyboard. You will get**10**as the return of the**COUNTA**function which is the sample size.

- After calculating the sample size, we will calculate the mean of the marks secured in the
**EEE**subject by the students. Write down the below formula in cell**D16**.

`=AVERAGE(D5:D14)`

- Again, press
**ENTER**on your keyboard, and you will get**72.6**as the return of the**AVERAGE**function which is the Mean of our dataset.

**Read More: **How to Apply Variance Formula in Excel to Get Plus-Minus Results

### Step 2: Use VAR Function to Calculate Variance

- Further, we will calculate the variance of our dataset. To calculate the variance, Write down the
**VAR**function in cell**D17**.

`=VAR(D5:D14)`

- After that, press
**ENTER**on your keyboard. As a result, you will get**79.15555556**as the return of the**VAR**function which is the Variance of our dataset.

**Read More: **How to Calculate Sample Variance in Excel

### Step 3: Apply STEDV Function to Calculate Standard Deviation in Excel

- Now, we will calculate the standard deviation by using the
**STDEV**Type the**STDEV**function in cell**D18**.

`=STDEV(D5:D14)`

- Further, press
**ENTER**on your keyboard, and you will get**8.896940798**as the return of the**STDEV**function.

**Read More: **How to Find Population Variance in Excel

## Calculate Standard Error in Excel

Meanwhile, we will calculate the standard error by using the standard deviation. Letâ€™s follow the instructions below to calculate the standard error!

- Firstly, select cell
**D18**. Then write down the below formula in that cell. The formula is,

`=D18/SQRT(D15)`

- Where
**D18**is the standard deviation, and**D15**is the sample size.

- After typing the formula, simply press
**ENTER**on your keyboard. You will get**2.813459713**as the standard error. As our standard error is greater than**2**, we will calculate the Standard Error of Skewness(**SES**).

**Read More:** How to Find the Variance of a Probability Distribution in Excel

## Calculate Standard Error of Skewness in Excel

Last but not the least, in this step, we will calculate the standard error of skewness as our standard error is **2.521904043 **which is greater than **2**. Letâ€™s follow the instructions below to calculate the standard error of skewness!

- To calculate the standard error of skewness, select cell
**D20**and type the**SQRT**function in that cell. The**SQRT**function is,

`=SQRT((6*D15*(D15-1))/((D15-1)*(D15+1)*(D15+3)))`

- Further, press
**ENTER**on your keyboard, and you will be able to calculate the standard error of skewness. The standard error of skewness is**647750276**which has been given in the below screenshot.

## Things to Remember

ðŸ‘‰ There are three types of formulas to calculate the standard deviation. Such as 1. **STDEV.S**(for sample), 2. **STDEV.P**(for population), and 3. The **STDEV **function is an old function.

ðŸ‘‰ **#DIV/0!** error happens when a value is divided by zero(0) or the cell reference is blank.

ðŸ‘‰ In **Microsoft 365**, Excel will show the **#Value! Error** if you donâ€™t select the proper dimension. The **#Value!** error occurs when any of the elements of the matrices is not a number.

**Download Practice Workbook**

Download this practice workbook to exercise while you are reading this article.

## Conclusion

I hope all of the suitable methods mentioned above to **calculate mean, variance, and standard deviation **will now provoke you to apply them in your **Excel **spreadsheets with more productivity. You are most welcome to feel free to comment if you have any questions or queries.