Trend function in Excel is a Statistical Function that computes the linear trend line based on the given linear set of data.

It calculates the predictive values of Y for given array values of X and uses the least square method based on the given two data series. The Trend function in Excel returns numbers in a linear trend matching known data points that is the existing data on which the trend in excel predicts the values of Y dependent on values of X needs to be linear data.

It is a technique used in the regression analysis that finds the line of best fit is a line through a scatter graph of data points that foremost indicates the relationship between those points for a given dataset, which helps to visualize the relationship between the data points. Const: It is an optional argument that specifies whether the constant value c to equal 0. If const is TRUE or omitted, c is calculated normally.

TREND function in excel is very simple and easy to use. In this example, suppose we have data for test scores with their GPA, now using this given data we need to make the prediction for the GPA. We have the existing data in column A and B, the existing values of GPA corresponding to scores is the known values of Y and the existing values of the score are the known values of X.

We have given with some values for X values as a score and we need to predict the Y values that is the GPA based on the existing values. We fixed the range for known values of X and Y, and passed the new value of X as a reference value. So in this Example, we have existing sales data of a company for the year that increases linearly from Jan to Dec We need to figure out the sales for the given upcoming months that is we need to predict the sales values based on the predictive values for the last one year data.

The existing data contains the dates in column A and the sales revenue in column B, we need to calculate the estimated sales value for next 5 months. Historical Data is given below:. Filed Under: Statistical Functions in Excel. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Free Investment Banking Course. Login details for this Free course will be emailed to you.

Trend Function in Excel Trend function in Excel is a Statistical Function that computes the linear trend line based on the given linear set of data. What is the least square method? Leave a Reply Cancel reply Your email address will not be published.This specific exercise is on how to calculate average trends in Excel and how to project future values based on these trends.

So assume you have the data below:. For instance, the yearly change trend from to is So now we know the year-over-year difference forwe should find the same changes for, etc. We are simply taking the average of each year-over-year change.

This comes out to 9. Here is what the table looks like once all the values are filled out:. Is this correct? Therefore, to compare apples to apples, you must take the percentage change year-over-year in order to accurately find a benchmark across all countries. Taking an average of an average can give you some strange results, because the annual changes are not weighted.

This is counter intuitive since the most recent year is significantly less than the first year. This is mostly due to year 4 more than doubling from the previous year, but it is an average of an average.

Thanks for calling this out. I reference an old post about calculating trends where someone recently left a comment about the counter-intuitiveness on calculating averages of […]. Sure, maybe this is true.

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## How to Calculate Trendline

I use the shortcuts all the time! The Cool Blue keyboard cover has been a great tool to remember the basic Excel shortcuts!

Share this story! Please let me know if you think that I missed something or if you know of a better way! KeyCuts January 11, at am Permalink. Leave a Reply Cancel reply. Search the Blog Search for:. Amazing way to learn Excel shortcuts! Learn Excel techniques and shortcuts Episode updates from the Dear Analyst podcast about Excel Updates on online and offline data workshops Enter your e-mail and hit the blue button!The tutorial shows how to calculate trend in Excel by using the TREND function, how to create trends on a graph, and more.

These days when technologies, markets and customer needs are changing so rapidly, it is critical that you move with trends, and not against them. Trend analysis can help you identify underlying patterns in the past and current data movements and project future behavior.

The Excel TREND function is used to calculate a linear trend line through a given set of dependent y-values and, optionally, a set of independent x-values and return values along the trend line. Additionally, the TREND function can extend the trendline into the future to project dependent y-values for a set of new x-values.

## Trend Analysis

The equation for the line is as follows. Since the new values are returned as an array, you won't be able to edit or delete them individually. At first sight, the syntax of the TREND function might seem excessively complicated, but the following examples will make things a lot easier.

Supposing you are analyzing some data for a sequential period of time and you want to spot a trend or pattern. In this example, we have the month numbers independent x-values in A2:A13 and sales numbers dependent y-values in B2:B Based on this data, we want to determine the overall trend in the time series ignoring hills and valleys.

As the result, you have both the numeric values for the line of best fit returned by the formula and a visual representation of those values in a graph:. To predict a trend for the future, you just need to include a set of new x-values in your TREND formula. For this, we extend our time series with a few more month numbers and do trend projection by using this formula:.

After that, create a new line chart for the extended data set B1:C Below I will briefly describe a few other techniques. In terms of Excel, this distinction is not so obvious because the TREND function can not only calculate current trends, but also return future y-values, i. Please take a look at the screenshot below and compare the results returned by the following formulas:.

A trendline is commonly used to observe the general trend in your current data as well as project future data movements.

To add a trend to an existing chart, right-click the data series, and then click Add Trendline… This will create the default linear trendline for the current data and open the Format Trendline pane where you can choose another trendline type. To forecast a trendspecify the number of periods under Forecast on the Format Trendline pane:. To show the trendline equationcheck the Display Equation on chart box. For better accuracy, you can show more digits in the trendline equation.

For more information, please see How to add a trendline in Excel. Another simple technique that can help you show a trend is called moving average aka rolling average or running average.

This method smoothes out short-term fluctuations in a sample time series and highlights longer-term patterns or trends. You can calculate moving average manually with your own formulas or have Excel make a trendline for you automatically. To have a closer look at the formulas discussed in this tutorial, you are welcome to download our sample Excel TREND workbook.

I thank you for reading and hope to see you on our blog next week! Is there a way to work with multiple selections, like it can be done with SUM function?In this tutorial, you will find the detailed description of all the trendline options available in Excel and when to use them.

You will also learn how to display a trendline equation in a chart and find the slope of trendline.

### Excel TREND Function

It is very easy to add a trendline in Excel. The only real challenge is to choose the trendline type that best corresponds to the type of data you are analyzing.

If you are looking for how to insert a trendline in an Excel chart, please check out the above linked tutorial. When adding a trendline in Excel, you have 6 different options to choose from. Additionally, Microsoft Excel allows displaying a trendline equation and R-squared value in a chart:.

Below, you will find a brief description of each trendline type with chart examples. The linear trend line is best to be used with linear data sets when the data points in a chart resemble a straight line.

Typically, a linear trendline describes a continuous rise or fall over time. For example, the following linear trendline shows a steady increase in sales over 6 months.

And the R 2 value of 0. The exponential trendline is a curved line that illustrates a rise or fall in data values at an increasing rate, therefore the line is usually more curved at one side. This trendline type is often used in sciences, for example to visualize a human population growth or decline in wildlife populations. Please note that an exponential trendline cannot be created for data that contains zeros or negative values. A good example of an exponential curve is the decay in the entire wild tiger population on the earth.

The logarithmic best-fit line is generally used to plot data that quickly increases or decreases and then levels off. It can include both positive and negative values. An example of a logarithmic trendline may be an inflation rate, which first is getting higher but after a while stabilizes. The polynomial curvilinear trendline works well for large data sets with oscillating values that have more than one rise and fall.

Generally, a polynomial is classified by the degree of the largest exponent. The degree of the polynomial trendline can also be determined by the number of bends on a graph. Typically, a quadratic polynomial trendline has one bend hill or valleya cubic polynomial has 1 or 2 bends, and a quartic polynomial has up to 3 bends. When adding a polynomial trendline in an Excel chart, you specify the degree by typing the corresponding number in the Order box on the Format Trendline pane, which is 2 by default:.

For example, the quadratic polynomial trend is evident on the following graph that shows the relationship between the profit and the number of years the product has been on the market: rise in the beginning, peak in the middle and fall near the end.Keep in touch and stay productive with Teams and Officeeven when you're working remotely. Excel inserts curly brackets at the beginning and end of the formula for you.

For more information on array formulas, see Guidelines and examples of array formulas. You can use TREND for polynomial curve fitting by regressing against the same variable raised to different powers.

For example, suppose column A contains y-values and column B contains x-values. You can always ask an expert in the Excel Tech Communityget support in the Answers communityor suggest a new feature or improvement on Excel User Voice. Learn more.

**Linear Regression: Making a linear trend line**

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It sounds like it might be helpful to connect you to one of our Office support agents. Contact Support. A logical value specifying whether to force the constant b to equal 0 If const is TRUE or omitted, b is calculated normally.Investors use this analysis tool a lot in order to determine the financial position of the business. In a trend analysis, the financial statements of the company are compared with each other for the several years after converting them in the percentage.

In the trend analysis, the sales of each year from the to will be converted into percentage form in order to compare them with each other.

In order to convert the figures into percentages for the comparison purposes, the percentages are calculated in the following way:. The percentage can be found this way and if the current-year percentages were greater than previous year percentage, this would mean that current-year result is better than the previous year result. Trend analysis has a great advantage that it can also be used to predict the future events. This is possible by forecasting the future cash flow based on the data available of the past.

With the help of trend analysis, you can predict the future and track the variances to add performance. However, in management accountancy, the calculation of trends is based on the data of the past. This is favorable in deducing the current situation of the company and the increase in the financial position of the company and growth over the past years. Apart from investments and financial data of the company, the trend analysis is also a useful tool that can be used effectively for the projections.

This allows the company to conduct market research and draw trends to forecast the demand of different products. This helps in the marketing purposes, and company can deduce results to select the right marketing approach to address the issues. Trend analysis can pretty much apply to all the techniques, which requires forecasting therefore, that it is a very useful tool in business.

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Enter your login:. Enter your password:. Stay signed in. Login As. Use your Facebook. Use your Twitter. Use your Google account to log in. Use your Intuit account to log in.This function is used to predict the future based date where it will be very useful in accounting and financial reporting.

Start Your Free Excel Course. TREND function is used for multiple values which are capable of calculating multiple y values and multiple values. Trend function is an array function that is used to add a trend line to a given chart where we can calculate data and extend the forecast result. In the advanced version, we will have a shortcut in the formula bar called more function and follow the below procedure. The below example shows months wise sales data where there are ups and downs in sales value if we produce this format we cannot the view the sales data easily, Hence we can show the sales data in using trend function in chart format so that I will be given the appropriate result.

We are going to using the trend function here to get the result, select the column D41 to D56 and use the trend function as per below.

Now this sales data shows only the trend figure with orange line show linear values and the graph will be more dynamic if we put the month wise growth value. In sales and financial accounting scenario, these charts are helpful to predict the company production and growth. Your email address will not be published. Forgot Password? Popular Course in this category. Course Price View Course.

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