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IB MAI HL Statistics & Probability Topic 4.2 Bivariate Statistics (id: 979db2347

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admin 发表于 2024-4-1 22:47:17 | 显示全部楼层 |阅读模式
本题目来源于试卷: IB MAI HL Statistics & Probability Topic 4.2 Bivariate Statistics,类别为 IB数学

[填空题]
Premier Pet-foods Co. has developed a)kha3w7 e3shn pgy li.1m3gx7 new dry food for dogs. They c1cwoq6ija uths j6o(j -)69wstart to mass produce the food and the amount of inventory in the warehouse is recorded on a monthly basis. The table b hai(1j69jctowsquwj-o)c66 elow shows the data for the amount of inventory (I, in tonnes) for the first ten months (t).


1.Sketch a scatter plot to represent the given data on the axes below.



2. 1. State a suitable type of function that could model this set of data points.
2. Hence determine the model function for this dataset.$I(t)=at^{2}+b t+c$ a =    b =    c =  
3. Comment on the choice of model using the coefficient of determination.
4. Sketch the model function on the scatter plot and comment on how it fits to the original data.
5 . Using your model, determine after how many months the inventory is at it's maximum.≈    months
6. Using your model, forecast when the the company will run out of inventory.
7. Using your model, determine the amount of inventory after 16 months and comment on if the model is still valid in forecasting inventory levels at this time.




参考答案:
空格1: -0.634空格2: 7.51空格3: -0.896空格4: 5.92±2%


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