*When school finances are limited, the cost-benefit test any educational policy must pass is not “Does this policy have any positive effect?” but rather “Is this policy the most productive use of these educational dollars? that directly compares CSR to specific alternative investments, but one careful analysis of several educational interventions found CSR to be the least cost effective of those studied.*

This average is weighted with respect to the number of shares acquired at each price, and not just the absolute price.

Weighted averages show up in many areas of finance besides the purchase price of shares, including portfolio returns, inventory accounting and valuation.

When a fund, which holds multiple securities, is up 10 percent on the year, that 10 percent represents a weighted average of returns for the fund with respect to the value of each position in the fund.

For inventory accounting, the weighted average value of inventory accounts for fluctuations in commodity prices, for example, while LIFO () methods give more importance to time than value.

We examine “what the research says” about whether class-size reduction has a positive impact on student learning and, if it does, by how much, for whom, and under what circumstances.

Despite there being a large literature on class-size effects on academic achievement, only a few studies are of high enough quality and sufficiently relevant to be given credence as a basis for legislative action.

Investors often build a position in a stock over several years.

Stock prices change daily, so it's tough to keep track of the cost basis on those shares accumulated over a period of years.

A weighted average is extremely useful in that it allows the final average number to reflect the relative importance of each observation and is thus more descriptive than a simple average.

It also has the effect of smoothing out data thereby enhancing accuracy.

## Comments Average Thesis Size

## Relationship between pore size, particle size, aggregate size.

After proper adjustment, the particle size, aggregate size, pore size distribution curves and the water characteristic curves were drawn on the same graph for each soil. Comparisons between pore size and particle size, aggregate size, and water characteristics were then made.…

## Weighted arithmetic mean - Wikipedia

The straight average of 80 and 90 is 85, the mean of the two class means. However, this does not account for the difference in number of students in each class 20 versus 30; hence the value of 85 does not reflect the average student grade independent of class.…

## FARM SIZE AND DETERMINANTS OF AGRICULTURAL PRODUCTIVITY IN.

In developed countries during the last decade the average farm size has being increased annually on average by 1,6% particularly, in USA – by 1,2%, in Japan – by 2,6%.…

## Sample Size and Saturation in PhD Studies Using Qualitative.

This pattern continues with the prevalence of studies using 50 and 60 as their sample size comparative to the numbers around them i.e. 50 is the most prevalent sample size with samples using any number from 50-59, and the same for 60.…

## Length of literature review? on

Optimal length of chapters can be sometimes discerned by dividing word count by number of chapters--so that you know in an 80,000 word thesis for example, with six chapters, you would have approximately 13,000 words per chapter. That can be used as a rough guide--and rough guide only of course.…

## Vagina Size the Average Vagina Size -

The average vagina size. When the vagina is relaxed the walls are collapsed against each other and the cervix lays closer to the front. When the vagina is aroused the cervix pulls up and the vagina walls open apart.…

## How Long is an Essay? Guidelines for Different Types of Essay

As you make an outline of your essay, make sure you have a clear idea of how much evidence, detail and argumentation will be needed to support your thesis. If you find that you don’t have enough ideas to fill out the word count, or that you need more space to make a convincing case, then consider revising your thesis to be more general or.…

## What type of cook researcher are you? Find this and many.

Survey the entire population. If the population size is around 500, 50% of the population should be sampled. If the population size is 1,500, 20% should be sampled. Beyond a certain point at approximately N=5,000, the population size is almost irrelevant, and a sample size of 400 will be adequate.…