Accounting for Managers
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Accounting for Managers
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- General Widget Company
- Progress Through Regression
Accounting for Managers
112 ment decisions. The second is to get a firm grip on the cost behavior and relationships within overhead and, if you sell or manufacture a product, inventory. It’s in overhead that man- agers first look to cut costs. Inventory is also a good area for finding ways to manage assets better and free up capital. General Widget Company All of this might make more sense in context. Let’s take a look at a generic widget manufacturer. We’ll start with inventory. The manufacturing process is concerned with three types of inventories, depending on the stage of production: raw materials, work in process, or finished goods inventories. An accounting period starts with a pile of stuff on hand, raw materials. As the manufacturing process proceeds to turn this stuff into things, finished goods, more Progress Through Regression Least squares regression analysis is an advanced mathe- matical way to determine if you can make accurate decisions about apparent relationships when the relationship among the variables is statistical rather than exact. (A statistical relationship means that the dependent variable’s observed values come from a probability distribution that is a function of other causal variables.) The least squares portion of regression analysis uses statistical standard deviation analysis to evaluate the strength of any correlations found. You start by gathering a number of observed values, like in the scat- ter graph.The underlying mathematics quickly grow complex, but there are many computer programs available to do the calculations. Regression analysis may provide comfort in a computer printout, but it allows for errors.The costs may have been entered incorrectly. Some costs might be left out.Time periods may be mismatched. Finally, it’s possible that the correlations, although statistically significant, may be real-world bogus. Even with all that, least squares regression analysis is a Cadillac of predictive methodologies.The larger your organization, the more likely you will run across it.You would then probably have dedicated cost analysts. Seek out a couple of them and ask them to show you how it works. It will be time well spent. Webster06.qxd 8/29/2003 5:48 PM Page 112 |
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