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When you have historic data and you have to forecast about some variables?‎

1. Utilize the simple average methods. 2. Utilize the trend methods. 3. Utilize the knowledge of the business. 4. Combinations of above.‎

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Answer added by  LABIB KOOLI, Director of the Sectoral Center for Training in Hotel Technologies at Southern Hammamet , Tunisian Vocational Training Agency (ATFP)
9 years ago

4. Combinations of above