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Topic: Weighted average

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In the News (Tue 22 Jan 19)

 John Halleck's Weighted Averages
In that case, the weighted average of one value is (W1*M1) divided by the sum of the weights.
If someone were to weight the shot by shot length the weighted average would have been: (10.3*10.3 + 10.8*10.8 + 10.5*10.5)/(10.3+10.8+10.5) or about 10.54 While shot length may, in some cases, be a good estimate of the correct weights, one can see here that it is not the same as using the correct weights.
Weight matrices on physical grounds have to be symmetric, so the weight has to have N columns and N rows.
www.cc.utah.edu /~nahaj/cave/survey/intro/weighted-averages.html   (2840 words)

 Isotopes and weighted average
The result is that the "average" mass for the atoms of an element is dictated by the most abundant or common isotope.
The atomic weights in the periodic table are weighted averages.
The weighted average is calculated in the same way you figure out your grade after a series of assignments.
www.800mainstreet.com /33/0003-003a-0-isotopes.htm   (214 words)

 Weighted mean - Wikipedia, the free encyclopedia
While weighted means generally behave in a similar fashion to arithmetic means, they do have a few counter-intuitive properties, as captured for instance in Simpson's paradox.
The straight average for the morning class is 80% and the straight average of the afternoon class is 90%.
The significance of this choice is that this weighted mean is the maximum likelihood estimator of the mean of the probability distributions under the assumption that they are independent and normally distributed with the same mean.
en.wikipedia.org /wiki/Weighted_average   (532 words)

 weighted average cost of capital - infos
Weighted average cost of capital analysis is crucial for all real estate investors because it can turn...
The calculation of a company's weighted average cost of capital involves the separate calculation of each element of the...
Weighted average : maximization of value vs. minimization of cost of capital / Timothy J. Nantell, C. Robert Carlson...
www.angelfire.com /alt2/ang10/11/weighted-average-cost-of-capital.html   (340 words)

 Weighted average   (Site not responding. Last check: 2007-11-06)
WACC weighted average is the grades had been unweighted, index weighted average using.
Weightings are the tests carry a weight of each class on the quizzes; and tests.
Weighted average unauthorized duplication, in which each value by weighted average webfinance, inc. To find weighted average that, the weighted average which weighted average is weighted mean see.
weighted-average.12twelve.net   (617 words)

 Weighted Average Credit Rating
The weighted average of all the bond credit ratings in a bond fund.
To arrive at the weighted average credit rating, the calculation starts with dividing the value of each bond in the fund by the total value of the fund.
The weight of a bond in the fund determines how much that bond influences the weighted average credit rating.
baystreet.investopedia.com /terms/w/weightedaveragecreditrating.asp   (207 words)

 Weighted Average
An average in which each quantity to be averaged is assigned a weight.
Weightings are the equivalent of having that many like items with the same value involved in the average.
To average these values, do a weighted average using the number of occurrences of each value as the weight.
www.investopedia.com /terms/w/weightedaverage.asp   (304 words)

An interpolation method where the interpolated values are weighted averages, with the weights being determined in inverse proportion to the distances that the known data are from an interpolation point.
An interpolation method that uses a weighted average of function values at the natural neighbors of an arbitrary point to determine an interpolated value at that point.
Given a sequence of function values and a matching sequence of real numbers, called weights, such that the sum of all of the weights is unity, then the sum of all of the products of the weights times the function values is called a weighted average of the function values.
ngwww.ucar.edu /ngdoc/ng/ngmath/definitions.html   (1295 words)

 Math Forum - Ask Dr. Math
This is certainly a "weighted average," because each truck's use is being weighted by its availability.
The average availability is 0.8833, and the average use (irrespective of availability) is 0.8.
The use average has been "skewed" by the high use number of the third truck, whose availability is only 2% in the first place.
mathforum.org /library/drmath/view/62505.html   (527 words)

 The English Section Weighted Average Requirement
The English Section 'Weighted Average Requirement' was modified in August 2005 to reflect the different requirements for students who are continuing with the 'old' curriculum and students who began in September 2005 with the new curriculum.
The 'weighting' procedure multiplies the numerical grade for each course by the number of study weeks awarded for the course; the resulting points from each course are then added, providing a sum which is divided by 8 (the total number of study weeks for all five courses).
Calculation of the weighted average (and consideration of other factors affecting student eligibility) will be done by the English Section Assistant in consultation with the section teaching staff.
www.uta.fi /FAST/ENG/weighted.html   (736 words)

 Average Problems: Word Problems Involving Averages
There are three main types of average problems: Average (Arithmetic Mean), Weighted Average and Average Speed.
Another type of average problem involves the weighted average - which is the average of two or more terms that do not all have the same number of members.
To find the weighted term, multiply each term by its weighting factor, which is the number of times each term occurs.
www.onlinemathlearning.com /average-problems.html   (384 words)

 Moving Average (Weighted)
The weighted moving average is calculated by averaging together the previous values over the given period, including the current value.
These values are weighted linearly, with the oldest value receiving a weight of 1, the next value receiving a weight of 2, and so on up to the current value, which receives a weight equal to the period.
The moving average at the beginning of a data series is not defined until there are enough values to fill the given period.
www.tradingsolutions.com /functions/MovingAverage(Weighted).html   (318 words)

 kbAlertz: (214049) - Discusses the difference between a weighted average and an average. Provides steps to find a ...
A weighted average differs from an average in that a weighted average returns a number that depends on the variables of both value and weight.
The average cost of the cases in each shipment -- determined by the formula ($0.20+$0.30)/2 = $0.25 -- is not an accurate measure of the average cost of the cases because it does not take into account that there are 30 more cases being purchased at $0.30 than at $0.20.
The weighted average would return $0.28, a more accurate representation of the average cost of a case of widgets in these two shipments.
www.kbalertz.com /kb_214049.aspx   (434 words)

 Division of Oil & Gas Weighted Average
The weighted average reports lists the volumetric weighted average of oil values for each of the seven Alaska North Slope Units.
This average is computed by multiplying the gross state lease volume in each accounting unit within the Unit by the royalty value in each accounting unit (before applicable field cost allowances) for each lessee and dividing the sum of these products by the total gross state volume in the unit.
Whenever values or volume allocations are revised a new weighted average report is published.
www.dog.dnr.state.ak.us /oil/programs/royalty/weighted_average.htm   (137 words)

 Moving average (technical analysis) - Wikipedia, the free encyclopedia
A moving average, in finance and especially in technical analysis, is one of a family of similar statistical techniques used to analyze time series data.
A moving average series can be calculated for any time series, but is most often applied to stock prices, returns or trading volumes.
In any case moving average levels are interpreted as support in a rising market, or resistance in a falling market.
en.wikipedia.org /wiki/Moving_average_(finance)   (1022 words)

 Investor/RT Tour - Indicator Weighted Average
The IWA is simply a moving average that is weighted using another indicator.
The weighting can be based on any of the built-in indicators in the Investor/RT library, or any user-defined custom indicators.
The raw volume will be used to weight the closing price data and average it over a 5-period span.
www.linnsoft.com /tour/techind/iwa.htm   (426 words)

 The Weighted Average Cost of Capital
The weighted cost of capital (WACC) and the return on invested capital (ROIC) are the most important elements in company valuation and the basis for most strategy and performance evaluation methods.
Usually it is calculated assuming both a constant cost of capital and a fixed set of target market value weights (Copeland et al) throughout the time frame of the analysis.
The weights used in the calculation are the ratio between the market value of each type of debt and equity in the capital structure, and the
www.fenews.com /fen49/best-of-fen/best-fen.htm   (691 words)

 the mass spectra of elements
The relative atomic mass of an element is the weighted average of the masses of the isotopes relative to 1/12 of the mass of a carbon-12 atom.
A "weighted average" allows for the fact that there won't be equal amounts of the various isotopes.
The average mass of these 123 atoms would be 1330 / 123 = 10.8 (to 3 significant figures).
www.chemguide.co.uk /analysis/masspec/elements.html   (1035 words)

 Microsoft Excel : Weighted Average
One of the most common inquiries submitted to me is about how to calculate weighted averages.
You need to know the average dollars per pound of coffee sold during a given period.
As you see, this weighted average correctly indicates that the dollars per pound of coffee is $8.27.
www.beyondtechnology.com /tips011.shtml   (263 words)

 Constructing Uniformly Weighted Moving Average Charts
When the subgroup sample sizes are constant, the width of the control limits for the first w moving averages decreases monotonically because each of the first w moving averages includes one more term than the preceding moving average.
A more systematic approach is to choose w by considering its effect on the average run length (the expected number of points plotted before a shift is detected).
The following SAS program computes the average run length for a two-sided moving average chart for various shifts in the mean.
www.okstate.edu /sas/v7/sashtml/books/qc/chap21/sect12.htm   (775 words)

 Weighted Average Cost of Capital - debt component
The Weighted Average Cost of Capital is your market based cost of debt and cost of equity weighted by the porportion of your debt to equity.
Calculate it by multiplying the proportion of your debt times your current interest rate on debt and the proportion of equity times the return expected by the market.
Your cost of debt is not your historical average.
www.clintburdett.com /process/10_costs/costs_05_2_cost_of_captial.htm   (259 words)

 Historical Poverty Tables   (Site not responding. Last check: 2007-11-06)
Weighted Average Poverty Thresholds for Families of Specified Size 1959 to 2003 ________________________________________________________________________ 2 people Unrelated individuals _____________________________ House- House- _____________________________ holder holder Calendar Under Aged 65 under aged 65 year All ages age 65 or older All ages age 65 or older ________________________________________________________________________ 1959........
Weighted Average Poverty Thresholds for Families of Specified Size 1959 to 2003 ___________________________________________________________ Families of 3 people or more _________________________________________________ Calendar 7 people year 3 people 4 people 5 people 6 people or more ___________________________________________________________ 1959.....
Weighted Average Poverty Thresholds for Families of Specified Size 1959 to 2003 _________________________________________________ Annual average Families of 3 people or more CPI, all _____________________________ items Calendar 9 people (1982-84 year 7 people 8 people or more =100) B/ _________________________________________________ 1959.....
www.census.gov /hhes/poverty/histpov/hstpov1.html   (221 words)

 Analysis of Asset Allocation - Weighted moving average   (Site not responding. Last check: 2007-11-06)
The n days weighted moving average is the weighted average of the closing prices of a stock during the last n days.
The weighted moving average assigns weights to the price series so that the more recent prices have larger weights.
As for the moving average, the above signals are generally considered as valid if you have at the same time a trend change on the moving average line.
www.asset-analysis.com /equities/tech_wemovaver.html   (198 words)

 WACC - Weighted Average Cost of Capital   (Site not responding. Last check: 2007-11-06)
Corporations create value for shareholders by earning a return on the invested capital that is above the cost of that capital.
WACC (Weighted Average Cost of Capital) is an expression of this cost and is used to see if certain intended investments or strategies or projects or purchases are worthwhile to undertake.
Another important complication is which mix of debt and equity should be used to maximize shareholder value (This is what "Weighted" means in WACC).
www.valuebasedmanagement.net /methods_wacc.html   (394 words)

 NYSDOT DQAB: Weighted Average Prices   (Site not responding. Last check: 2007-11-06)
The Weighted Average Item Price Report (WAIPR) (formerly the weighted average bid price book) is a standard report produced using NYSDOT’s Trns•Port BAMS/DSS.
It is a numerical listing of all items used in Department contracts that have been let within the time period indicated on the report.
Included in the report are the number of contract occurrences, total quantity, total dollars, weighted average awarded price, and weighted average price for the low three bidders.
dot.state.ny.us /cmb/consult/awbpbp/awbpbp.html   (143 words)

 Re: weighted average for sports
Older > figures should have a lower weighting, scaled by two variables - both the > number of games ago this performance was achieved AND the time since that > performance.
FreeFore has an option to develop the predictive equation (weights) between score and interval capturing all needed memory such or auto-projective structure such as exponential smoothing, ARIMA structure in general and even develops this in a Robust Way via Intervention Detection (Pulses, Level Shifts).
This is called a Transfer Function and has regression and exponential smoothing and a zillion more models as particular cases.
www.mail-archive.com /edstat@lists.ncsu.edu/msg03927.html   (497 words)

 Math Forum - Ask Dr. Math Archives: Weighted Averages   (Site not responding. Last check: 2007-11-06)
Can you tell me what is meant by "weighted average," and give me some examples of when and how weighted averages are used?
I can't figure out the best way to get the average operating hours for the truck fleet.
The Math Forum is a research and educational enterprise of the Drexel School of Education.
mathforum.org /library/drmath/sets/select/dm_weighted_ave.html   (177 words)

 The Weighted Average Cost of Capital
Usually it is calculated both assuming a constant cost of capital and a fixed set of target market value weights [i]   throughout the time frame of the analysis.
To be consistent with the free cash flow or economic profit approach, the estimated cost of capital must comprise a weighted average of the marginal cost of all sources of capital that involves cash payment - excluding non-interest bearing liabilities (in simple form):
The weights used in the calculation are the ratio between the market value of each type of debt and equity in the capital structure, and the market value of the company.
www.fenews.com /fen29/sim_in_financialeng_files/sim_in_financialeng.htm   (694 words)

 Position-Weighted Average Formula - Nano See, Nano Do
is the value), but with more weight given to values with positions closer to a specific point of reference.
I was sure such an equation must be known, and I still am, but I haven't yet managed to find it.
I created a formula that did just this, and I even made special algorithms to recompute the position-weighted average with new data, using minimal data reinput.
nanobox.chipx86.com /blog/2004/09/position-weighted-average-formula.php   (282 words)

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