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Stdev excel на русском

STDEV Function

What is the STDEV Function?

The STDEV Function is categorized under Excel Statistical functions RANK Function The RANK Function is categorized as an Excel Statistical function. The function returns the statistical rank of a given value within a supplied array of values. Thus, it determines the position of a specific value in an array. . The function will estimate the standard deviation based on a sample.

As a financial analyst Financial Analyst Job Description The financial analyst job description below gives a typical example of all the skills, education, and experience required to be hired for an analyst job at a bank, institution, or corporation. Perform financial forecasting, reporting, and operational metrics tracking, analyze financial data, create financial models , STDEV can be useful in using the annual rate of return on an investment to measure its volatility. A risky stock will show a higher standard deviation while a safer stock, such as blue-chip companies like Apple or Coca-Cola, will show a lower standard deviation.

Formula

=STDEV(number1,[number2],…)

The STDEV function uses the following arguments:

  1. Number1 (required argument) – This is the first number argument that corresponds to a sample of a population.
  2. Number2 (optional argument) – This is a number argument that corresponds to a sample of a population.

Notes

  1. Arguments must provide two or more numeric values to the function.
  2. The function can contain 1–255 numeric arguments.
  3. Arguments can either be numbers, arrays, or references that contain numbers.
  4. STDEV is used to calculate the standard deviation of a population sample. To calculate the standard deviation of a whole population, we should use STDEVP or STDEV.P instead.

How to use the STDEV Function in Excel?

As a worksheet function, STDEV can be entered as part of a formula in a cell of a worksheet. To understand the uses of the function, let us consider an example:

Example

Suppose we are given the test scores of students below:

For the standard deviation, the formula used is:

We get the results below:

The equation used is:

  • xtakes on each value in the set
  • xis the average (statistical mean) of the set of values
  • nis the number of values

Things to remember about the STDEV Function:

  1. #DIV/0! error – Occurs if less than two numeric values are provided to the STDEV function.
  2. #VALUE error – Happens if any of the given values to the function are text values.
  3. In MS Excel 2010, the STDEV function has been updated to the STDEV.S function. However, STDEV can still be used to allow for backward compatibility with older versions of Excel.

Additional resources

Thanks for reading CFI’s guide to important Excel functions! By taking the time to learn and master these functions, you’ll significantly improve your financial modeling in Excel. To learn more, check out these additional CFI resources:

  • Excel Functions for Finance Excel for Finance This Excel for Finance guide will teach the top 10 formulas and functions you must know to be a great financial analyst in Excel. This guide has examples, screenshots and step by step instructions. In the end, download the free Excel template that includes all the finance functions covered in the tutorial
  • All Excel Functions Functions List of the most important Excel functions for financial analysts. This cheat sheet covers 100s of functions that are critical to know as an Excel analyst
  • Financial Modeling Best Practices Free Financial Modeling Guide This financial modeling guide covers Excel tips and best practices on assumptions, drivers, forecasting, linking the three statements, DCF analysis, more
  • Financial Analyst Certification FMVA® Certification Join 350,600+ students who work for companies like Amazon, J.P. Morgan, and Ferrari

Standard Deviation in Excel

Standard Deviation in excel was an inbuilt function in excel for 2007 and older versions which was used to obtain the standard deviation based on a sample given as argument, but in excel versions 2010 and above we have other functions to calculate standard deviation which is STDEV.P and STDEV.S.

Standard Deviation in Excel (Table of Contents)

What is Standard Deviation in Excel?

Standard Deviation in excel is the commonly used Statistical function in excel. A statistical tool shows the distance between each value in the data set varies from the average value of the list itself.

For Example: Suppose you have data points 5, 3, 6, 8 and 10.

  1. Total Data Points: 5
  2. Sum of Data Points: 32
  3. Average (Mean) = 32/5 = 6.4
  4. Standard Deviation excel = 2.7

This means that most data points range is within 2.7 of the average value i.e. between 3.7 to 9.1 (either side of the average value of 6.4).

  • If the Standard Deviation value is lower, then the frequency of the data points is closer to the mean (average) value.
  • If the Standard Deviation value is higher, then the frequency of the data points is wider to the mean (average) value.

Calculate Standard Deviation in Excel

When we deal with quantitative data we always to look for a typical element of the data set. What is the middle of the data point? i.e. the average value or mean of the data points.

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Standard Deviation helps us to understand how spread out a data is. Especially in the finance industry, price data is used as a measure of volatility.

Below examples will allow us to understand the concept of Standard Deviation Excel practically.

Below are the scores of the skill level of the employees in a company. From this data set, we need to calculate the Standard Deviation value.

Follow the below steps to calculate the Standard Deviation in Excel.

Mean = 55.2

So the average value of the data is 55.2 i.e. average score of the skill level of the employees is 55.2

Step 2: Calculate each employees score difference from the mean value and find the difference.

Variance = 3.36

Step 3: Calculate SD (Standard Deviation Excel)

SD is just the square root of the Variance.

SD = 1.83

Conclusion: So the story of this calculation is the score range of the employees is ranging from 53.37 to 57.03.

Standard Deviation Formulas in Excel

In excel we have totally 8 types of Standard Deviation Formulas in Excel.

These 8 formulas are under two groups Sample & Population.

STDEV.S, STDEVA, STDEV, DSTDEV is under Sample.

STDEV.P, STDEVP, STDEVPA, DSTDEVP is under Population.

  • Population means you are considering the entire data set.
  • Sample means it is very difficult to use the entire data and you are taking only the sample of the data set.

We can use sample data of the entire data set to calculate the Standard Deviation and draw inferences for the entire data set.

  • In almost all the case, we use the STDEV.S formula to calculate standard deviation in excel. This is used when we want to use only the numerical values and ignore the text values.
  • If at all you want to use text values in the range use STDEVA. It takes text and FALSE value as 0 and TRUE as 1.

Using STDEV.S Formula for Standard Deviation in Excel

The formula of STDEV.S in excel includes only numbers.

  • Number 1: The first value of the sample of the entire population. You can select the range here.
  • Number 2: Optional argument. If you have covered the entire sample data through range then this becomes optional.

How to Use STDEV.S Function in Excel?

Below is the data of the heights of the goat and the height of each goat at the shoulder level is below.

Step 1: Calculate the Mean value i.e. average value.

Step 2: Apply STDEV.S in excel formula to the range B2:B6.

So the Standard Deviation of the height of the goats is 165 (nearest to the millimeter)

The value 165 millimeter indicates that most of the goat’s height would be within the range of 229 and 559 millimeters

That is the either side of the mean value i.e. 394 – 165 = 229 & 394 + 165 = 559.

Note: This is the Standard Deviation of most of the goats means only a few are in this height range. When we apply the formula to larger datasets we will see the bigger difference.

Things to Remember

  • In STDEV.S in excel, “S” represents sample data set.
  • It will ignore text values.
  • STDEVA considers both text and numerical values. TRUE= 1 and FASLE = 0.
  • Sample means only a few elements of the large population.
  • There must at least two numerical values.
  • S is available from 2010 and later versions. In earlier versions, STDEV is the formula.

Recommended Articles

This has been a guide to Standard Deviation in Excel. Here we discuss the STDEV.S Formula to calculate Standard Deviation in excel along with examples and downloadable excel templates. You may also look at these useful functions in excel –

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Работа с Excel с помощью C# (Microsoft.Office.Interop.Excel)

Оставляю заметку по работе с Excel с помощью C#.

Привожу фрагменты кода, которые искал когда-то сам для работы с Excel документами.

Наработки очень пригодились в работе для формирования отчетности.

Прежде всего нужно подключить библиотеку Microsoft.Office.Interop.Excel.

Visual Studio здесь довольно старой версии. Если у вас версия новая, отличаться будет только вид окна.

Далее создаем псевдоним для работы с Excel:

using Excel = Microsoft.Office.Interop.Excel;

Расстановка рамок.

Расставляем рамки со всех сторон:

Цвет рамки можно установить так:

Выравнивания в диапазоне задаются так:

Формулы

Определим задачу: получить сумму диапазона ячеек A4:A10.

Для начала снова получим диапазон ячеек:

Excel.Range formulaRange = sheet.get_Range(sheet.Cells[4, 1], sheet.Cells[9, 1]);

Далее получим диапазон вида A4:A10 по адресу ячейки ( [4,1]; [9;1] ) описанному выше:

string adder = formulaRange.get_Address(1, 1, Excel.XlReferenceStyle.xlA1, Type.Missing, Type.Missing);

Теперь в переменной adder у нас хранится строковое значение диапазона ( [4,1]; [9;1] ), то есть A4:A10.

Выделение ячейки или диапазона ячеек

Так же можно выделить ячейку или диапазон, как если бы мы выделили их мышкой:

Авто ширина и авто высота

Чтобы настроить авто ширину и высоту для диапазона, используем такие команды:

Получаем значения из ячеек

Чтобы получить значение из ячейки, используем такой код:

Добавляем лист в рабочую книгу

Чтобы добавить лист и дать ему заголовок, используем следующее:

Добавление разрыва страницы

Сохраняем документ

Как открыть существующий документ Excel

Комментарии

При работе с Excel с помощью C# большую помощь может оказать редактор Visual Basic, встроенный в Excel.

Для этого в настройках ленты надо добавить пункт «Разработчик». Далее начинаем запись макроса, производим действия и останавливаем запись.

Далее заходим в редактор Visual Basic и смотрим код, который туда записался:

В данном макросе записаны все действия, которые мы выполнили во время его записи. Эти методы и свойства можно использовать в C# коде.

Данный метод так же может оказать помощь в формировании относительных формул, например, выполнить сложение чисел, находящиеся слева от текущей ячейки на 4 столбца, и т.п. Пример:

Так же во время работы может возникнуть ошибка: метод завершен неверно. Это может означать, что не выбран лист, с которым идет работа.

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