Is there a difference between forecasting demand and forecasting sales? Can demand be forecast from historical sales data?
What is the distinction between forecasting and planning?
Qualitative forecasting methods should be used only as a last resort. Agree or disagree? Comment.
Describe the uses of qualitative, time-series, and causal forecasts.
Qualitative forecasts and causal forecasts are not particularly useful as inputs to inventory and scheduling decisions. Why is this statement true?
What type of time-series components would you expect for the following products and services?
a. Monthly sales of a retail florist.
b. Monthly sales of milk in a supermarket.
c. Daily demand in a call center.
Forecasting demand and forecasting sales
Is there a difference between forecasting demand and forecasting sales? Can demand be forecast from historical sales data?
Yes, there is a difference between forecasting demand and forecasting sales. Demand is the quantity of a product or service that customers are willing and able to buy, while sales is the quantity of a product or service that is actually sold. Demand can be forecast from historical sales data, but it is important to remember that there are other factors that can also affect demand, such as changes in prices, marketing, and the economy.
What is the distinction between forecasting and planning?
Forecasting is the process of predicting future demand or sales, while planning is the process of setting goals and developing strategies to achieve those goals. Forecasting is a necessary input to planning, but it is not the only input. Other inputs to planning include the company's mission, goals, and objectives, as well as the company's resources and capabilities.
Qualitative forecasting methods should be used only as a last resort. Agree or disagree? Comment.
I disagree with the statement that qualitative forecasting methods should be used only as a last resort. Qualitative forecasting methods can be very useful in situations where there is limited historical data or where the demand is influenced by factors that are difficult to quantify. For example, qualitative forecasting methods can be used to forecast demand for new products or services, or to forecast demand in markets that are experiencing rapid change.
Describe the uses of qualitative, time-series, and causal forecasts.
- Qualitative forecasts are based on the judgment of experts or stakeholders. They are often used in situations where there is limited historical data or where the demand is influenced by factors that are difficult to quantify.
- Time-series forecasts are based on the analysis of historical data. They are often used to forecast demand for products or services that have a relatively stable demand pattern.
- Causal forecasts are based on the identification of causal factors that influence demand. They are often used to forecast demand for products or services that are influenced by factors such as prices, marketing, and the economy.
- Monthly sales of a retail florist: This product is likely to have a seasonal component, as sales will be higher during certain times of the year, such as Valentine's Day and Mother's Day. It may also have a trend component, as sales may be increasing or decreasing over time.
- Monthly sales of milk in a supermarket: This product is likely to have a trend component, as sales may be increase ng or decreasing over time. It may also have a random component, as sales may be affected by factors such as weather and holidays.
- Daily demand in a call center: This product is likely to have a trend component, as the number of calls may be increasing or decreasing over time. It may also have a seasonal component, as the number of calls may be higher during certain times of the day, such as during business hours.