50. If average variable costs fall, marginal costs must be less than average variable costs.
51. Fixed costs and overhead are identical.
52. The change in fixed costs over the short run is seen in the behavior of marginal costs.
53. At the low point of the average total cost curve, marginal costs and average total costs are equal.
54. The long-run and the planning horizon are synonymous.
55. If long-run average costs are falling, then the firm is experiencing diseconomies of scale.
56. Economies of scale are followed by diseconomies of scale.
57. Larger is always better.
58. Economies of scope is when a firm obtains a production advantage from producing more than one product.
59. Downsizing may result in an increase in accounting costs.