Demand Forecasting: Systems, Methods & Tools to Calculate Your Exact Inventory Needs

Demand forecasting is that the type of knowledge analytics that use algorithms to predict future demand of things , sales, transactions or whatever drives the demand, using historical data, past events and trends like seasonality. Essentially, algorithms process large sets of (historical) data to make models that predict the long run with a specific confidence level. With accurate forecasts, managers altogether aspects of the supply chain can make well-informed business decisions for staffing, logistics, sales and inventory.There are many theories and methods available for forecasting differing types of patterns. they need however one thing in common: they work well in one situation but not in others. Therefore, all algorithms are trained on an equivalent data and therefore the one best suited thereto situation or sort of demand is picked. By using actual data, accuracy are often monitored and therefore the approach are often changed automatically if it might cause more accurate forecasts.

Value of Demand Forecasting

Demand forecasting is hard to urge exactly right but there are ways to extend your forecast accuracy. A more accurate forecast can benefit manufacturers, distributors and retailers a like. It can support the availability chain and help suppliers along the merchandise journey deliver results to their customers more effectively.Essentially, demand forecasting is leveraging data and analytics about your product and thus the market to closely predict customer demand over a selected time-frame . Demand forecasting could even be a critical component for several businesses, so let’s consider quite the basics that provide value.

Meet customer expectations:

When you have accurate demand forecasting, you’ll have the products your customers want, when your customers want them. Problems arise once you don’t have the proper amount of inventory stock to satisfy demand. Customers get frustrated and you risk losing them if you can’t provide the merchandise .If you consistently have low inventory stock, customers will look elsewhere and you’ll lose business. With ample data around customer demand during certain seasons, you’ll more accurately forecast demand. this enables you to organize with the proper amount of inventory stock to satisfy customer expectations.

What is meant by demand forecasting?

What are the different types of demand?

Decrease the cost of inventory stock:

Demanding forecasting also can play a big role in decreasing the quantity of cash spent on inventory. If the quantity of inventory stock is accurately forecasted then you simply got to have enough inventory space and employees to manage it. Inventory costs can skyrocket once you have an more than inventory stock and you bring too many of us on board to seem after it.If you over-order inventory stock, then you would like more room to deal with it. However, more room equates to extra money . Your overhead are going to be higher and utility bills also will increase. With accurate demand forecasting, you’ll minimise costs within the warehouse because you simply order what you would like .

Minimise safety stock:

Safety stock are often helpful to supply a buffer when there’s an unexpected change in demand or something goes awry along the availability chain. Weather events or accidents can impact shipments. Safety stock is there to guard against these problems. Still, many companies order an excessive amount of safety stock. With demand forecasting, it can check out patterns and factors around these events and supply a more optimised amount of safety stock. With more accurate forecasting, there’ll be less of a requirement for giant amounts of safety stock.

Research: Quantitative vs qualitative

One of the foremost important steps of the Demand Forecasting process is that the selection of the acceptable method for Demand Forecasting. Demand are often forecasted using (A) Qualitative methods or (B) Quantitative methods as explained below:

Qualitative methods:

The Delphi Technique: A panel of experts are appointed to supply a requirement Forecast. Each expert is asked to get a forecast of their assigned specific segment.After the initial forecasting round, each expert reads out their forecast and within the method , each expert is influenced by other experts. A consequent forecast is again made by all experts and thus the method is repeated until all experts reach a near consensus scenario.

Sales Force Opinion: The Sales Manager asks for inputs of expected demand from each Salesperson in their team. Each Salesperson evaluates their respective region and merchandise categories and provides their individual customer demand. Eventually, the Sales Manager aggregates all the stress and generates the ultimate version of Demand Forecast after management’s judgment.

Market Research: In marketing research technique, customer-specific surveys are deployed to get potential demand. Such surveys are generally within the sort of questionnaires that directly seeks personal, demographic, preference and economic information from end customers. Since this sort of research is on a sampling basis, care must be exercised in terms of the survey regions, locations, and demographics of the top customer. this sort of method might be beneficial for products that have little to no demand history.

Quantitative methods:

Trend projection method: Trend projection method are often effectively deployed for businesses with an outsized sales data history of typically quite 18 to 24 months. This historical data generates a “time series” which represents the past sales and projected demand for a selected product category under normal conditions by a graphical plotting method or the tiniest amount square method.

Barometric technique: Barometric technique of Demand Forecasting is predicated on the principle of recording events within the present to predict the longer term . within the Demand Forecasting process, this is often accomplished by analyzing the statistical and economic indicators. Generally, forecasters deploy statistical analysis like Leading series, Concurrent series or Lagging series to get the Demand Forecast.

Econometric forecasting technique: Econometric forecasting utilizes auto regressive integrated moving-average and sophisticated mathematical equations, to determine relationships between demand and factors that influence the demand. An equation springs and fine-tuned to make sure a reliable historical representation. Finally, the projected values of the influencing variables are inserted into the equation to get a forecast.

Combining the two:

This doesn’t mean you’d wish to select one or the other kinds of research.If you’ve data available, this might always be utilized in how .But what if you’re launching a fresh product? Or running a huge paid advertising campaign unlike anything you’ve done before? Or an economic recession just hit?It might be that your sales will take an otherwise unexpected uptrend or downtrend.This is where your qualitative research of customer behaviours and market trends can add more depth. Helping to interpret your past sales data during a more accurate takeaway trends can add more depth

Methods of Demand Forecasting

There are several methods of demand forecasting applied in terms of; the aim of forecasting, data required, data availability and therefore the time-frame within which the demand is to be forecasted. Each method varies from each other and hence the forecaster must select that method which most accurately fits the need .

Survey Methods:

Under the survey method, the consumers are contacted directly are asked about their intentions for a product and their future purchase plans. This method is usually used when the forecasting of a requirement is to be finished a fast period of a brief time . The survey method includes:

  • Consumer Survey Method
  • Opinion Poll Methods

Statistical Methods:

The statistical methods are often used when the forecasting of demand is to be finished a extended period. The statistical methods utilize the time-series (historical) cross-sectional data to estimate the long-term demand for a product. The statistical methods are used more often and are considered superior than the opposite techniques of demand forecasting due to subsequent reasons:

  • There is a minimum element of subjectivity within the statistical methods.
  • The estimation method is scientific and depends on the connection between the dependent and independent variables.
  • The estimates are more reliable
  • Also, the price involved within the estimation of demand is that the minimum.

The statistical methods include:

  • Trend Projection Methods
  • Barometric Methods
  • Econometric Methods

Advantages of Demand Forecasting

Allows for Tracking Sales
Companies uses demand forecasting as a basis for creating sales projections. Sales numbers receive plenty of attention because they’re the source of a company’s money stream. By analyzing demand, a business can make predictions about sales and allocate resources accordingly. as an example , if a retail store expects stronger-than-usual demand for a selected item during the holiday season, it can hire more staff to accommodate the wants of its customers.

Support Business Strategy
In business, companies seek ways to understand an edge over competitors through marketing strategies, whether or not they’re offering a product or a service. By forecasting demand for future periods, an organization can alter its business and marketing strategy to satisfy expected demand by its customer base.

Helps to manage Costs
Demand forecasting also allows an organization to manage its production costs. as an example an organization can place an order for raw materials before time to need advantage of favorable pricing if it forecasts an increase in demand. Demand forecasting allows an organization to budget accordingly, making it more efficient than it’d be in operating on a response basis only. A business can justify a reduction in spending for advertising and promotion if its demand forecast involves it.

Tracking Overall Performance
Every business should assess its performance. this means identifying the things that it does well and where the business missed the mark. Demand forecasting gives the company a basis to match actual demand with management’s expectations. during this manner , demand forecasting acts as a check and balance. the company can identify how far its demand forecast is away from actual demand, and make adjustments to its business model accordingly.

Disadvantages of Demand Forecasting

While demand forecasting provides many benefits as you propose for your company’s future operations, no process is ideal and a few snags may occur. one among the disadvantages of demand forecasting is that not every situation are often predicted. for instance , a severe weather event could impact product or material supply availability or transportation logistics. Consumer buying decisions could even be impacted by a sudden event that affects the economy or a replacement scientific study that says certain kinds of products are harmful to one’s health. While it’s going to take time for the impact of those events to be fully realized, the choices made by your company have probably already been set into operation, so you’ll see some negative financial impact.Read more


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