Receiving can affect direct materials price variances if there is no inventory. The accounting department will mark up prices to reflect a shortage.
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The material cost variance denoting the difference between the standard cost of materials and actual cost of matrials. The material cost variance is between the standard material cost for actual production in units and actual cost. The total cost is usually determined by two differenct factors of influence viz quantity of materials utilized/ required and price of the materials. The fluctuations in the material cost are only due to the fluctuations in the utility of materials due to many factors. Material cost variance can be computed into two different ways: DIRECT METHOD AND INDIRECT METHOD material cost variance= Standard cost of materials for actual output- actual cost of raw materials. MCV=(S Q AO X SP)-(AQ X AP) Indirect Method: material cost variance= Material price variance (MPV)+Material usage Variance
Yes, you can have a negative coefficient in a direct variation. So if you had y = -7x, that would be a direct variation. If you have y = -x, I do not know, if that is what you mean. Hope it helped.
There are two type of direct method one is used in grouped data and second one used in ungrouped data
Direct access means going straight to the record you want,and random access means pick data randomly and then find that data which you required.http://wiki.answers.com/Difference_between_direct_and_sequential_access#ixzz1685bfqda
In the direct method, the cells are enumerated by determining colony-forming units on a Petri dish; in the indirect method, the cell numbers are approximated using a spectrophotometer.