Staple goods and impulse goods are examples of which type of consumer good?

staple goods and impulse goods are examples of convenience products which consumers usually  buy. these products can be bought almost everywhere and are readily available for purchase. usually, the quality and price of the product are not considered. examples of staple goods are sugar and bread, while impulse goods examples are chocolates and magazine.

a manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. at the end of december, the company wishes to forecast sales for january. the estimate of trend through november has been 200 additional boards sold per month. average sales have been around 1000 units per month. the demand for december was 1100 units. the company uses α = 0.20 and β = 0.10. make a forecast including trend for the month of january.