问题如下图：
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解释：
如何区分理解规模经济、规模不经济和规模报酬不变？
Wendy_品职助教 · 2019年09月01日
规模经济和规模报酬研究的都不是一回事。
规模经济反映的是生产要素的集中程度同经济效益之间的关系。规模经济的优越性在于:随着产量的增加，长期平均总成本下降的特性。但这并不仅仅意味着生产规模越大越好，因为规模经济追求的是能获取最佳经济效益的生产规模。一旦企业生产规模扩大到超过一定的规模，边际效益却会逐渐下降，甚至跌破趋向零，乃至变成负值，引发规模不经济现象。
规模报酬又叫做规模收益(returns to scale)：指在技术水平和要素价格不变的条件下,当所有要素都按同一比例变动时，产量（收益）变动的状态.。产量增加的比例等于各种生产要素增加的比例，称之为规模报酬不变。比如，厂商的要素投入增加100%，产量的增加量也是100%。
NO.PZ2016010801000025 问题如下 Healthy Co. is a factory whiprocing health care procts. The long-run average totcost is $15 per unit antotoutput is 500 units. The manager plans to increase the totoutput to 600 units. After some calculation, it is expecteththe long-run average totcost will increase to $18. Whiof the following scription about Healthy Co. is most appropriate? A.Healthy Co. is experiencing the constant returns to scale. B.Healthy Co. is experiencing the seconomies of scale. C.Healthy Co. is experiencing the economies of scale. B is correct.When the scale of the business increases (600/500-1=20%), the average unit costs increases (18/15-1=20%) well. upwarsloping long-run average totcost curve means seconomies of scale.考点规模经济。解析:产出上涨了600/500-1=20%，平均销售成本也上涨了18/15-1=20%注意到平均单位成本的上涨就意味着企业运行在规模不经济的阶段。 题目说的是计划增产，通过计算如果增产那么单位成本就会增加。也就是当前已经是处于规模经济阶段了，如果按计划增产，就会进入规模不经济啊。不是吗？
NO.PZ2016010801000025 问题如下 Healthy Co. is a factory whiprocing health care procts. The long-run average totcost is $15 per unit antotoutput is 500 units. The manager plans to increase the totoutput to 600 units. After some calculation, it is expecteththe long-run average totcost will increase to $18. Whiof the following scription about Healthy Co. is most appropriate? A.Healthy Co. is experiencing the constant returns to scale. B.Healthy Co. is experiencing the seconomies of scale. C.Healthy Co. is experiencing the economies of scale. B is correct.When the scale of the business increases (600/500-1=20%), the average unit costs increases (18/15-1=20%) well. upwarsloping long-run average totcost curve means seconomies of scale.考点规模经济。解析:产出上涨了600/500-1=20%，平均销售成本也上涨了18/15-1=20%注意到平均单位成本的上涨就意味着企业运行在规模不经济的阶段。 如题
NO.PZ2016010801000025 问题如下 Healthy Co. is a factory whiprocing health care procts. The long-run average totcost is $15 per unit antotoutput is 500 units. The manager plans to increase the totoutput to 600 units. After some calculation, it is expecteththe long-run average totcost will increase to $18. Whiof the following scription about Healthy Co. is most appropriate? A.Healthy Co. is experiencing the constant returns to scale. B.Healthy Co. is experiencing the seconomies of scale. C.Healthy Co. is experiencing the economies of scale. B is correct.When the scale of the business increases (600/500-1=20%), the average unit costs increases (18/15-1=20%) well. upwarsloping long-run average totcost curve means seconomies of scale.考点规模经济。解析:产出上涨了600/500-1=20%，平均销售成本也上涨了18/15-1=20%注意到平均单位成本的上涨就意味着企业运行在规模不经济的阶段。 units从500到600但是他们的成本从15增加到18，那就是slope是上升的，那就是规模不经济啊，还要算吗
NO.PZ2016010801000025 Healthy Co. is experiencing the seconomies of scale. Healthy Co. is experiencing the economies of scale. B is correct. When the scale of the business increases (600/500-1=20%), the average unit costs increases (18/15-1=20%) well. upwarsloping long-run average totcost curve means seconomies of scale. 考点规模经济。 解析:产出上涨了600/500-1=20%，平均销售成本也上涨了18/15-1=20% 注意到平均单位成本的上涨就意味着企业运行在规模不经济的阶段。这道题前面计算了量的20%有用吗？不是直接看单位平均成本，也即是这后一会20%有没有变化就可以了吗？前面这个20%主要是用在哪里？
单位成本都是33.3，500/15,600/18,单位成本不变不应该是规模经济吗