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Category: *Key Stage 5

Impact of Population Growth on Aggregate Demand and Supply

Aggregate Supply(Productive capacity of an economy) and Aggregate Demand are impact by the populationg growth.

Impact on AS (Aggregate Supply)

Population growth makes more people available to work and to produce output although there is a lagged response.

Eg: High birth and death rates in China in the 1930s and 1940s led to fewer people looking for jobs in the 1950s.

Eg: Fall in Death rate and rise in borth rate in the 1950s led to number of people reaching work age beginning to rise sharply in the late 1960s and 1970s.

Impact on AD (Aggregate Demand)

Population growth affects patterns of demand and investment.

Societies with low levels of per capita income spend more on consumption than on investment.

*The faster the population grows, the more investment needed to simply maintain the existing average level of capital per member of the workforce.

Therefore, the demand for capital widening increases instead of the demand for capital deepening.

Capital Widening: Keeping per worker availability of capital constant

Capital Deepening: Making available more capital per worker

Therefore, the output per man hour may not rise which inhibits growth.

Watch more on how this affected China in the video below:

Demographic Challenges of China

As the most populous country in the world with one fifth of the wolr’d population, China reached its peak of the population growth in 1960s. Thereby, until recent, the food production, agriculture and economic growth rates were not much higher than population growth in China. So, the effect of population growth was strongly felt.

With China’s mortality rate been 7.15 per thousand in 2012 and its fertility rate been 12.1 per thousand in the same year accompanied by 18% of its population been migrants are statistical information that clearly states that Chinese population growth rate is risking its economy.

However, the above situation was not led in a day or two, rather due to years of impact and activity. For instance, in mid 1960s China faced a surge in population growth leading to large numbers of young people of marriageable age making it difficult to cut down the fertility rate in the second half of the 1980s. This clearly teaches the policy makers that they must take a long term view of the relationship between population size and resources. This is especially important for two reasons:

  • Population growth rate depends on mortality, fertility, migration and age structure.
  • Higher the dependency ratio, higher the demographic investment, limiting the pace of economic growth,

Watch more about this below:

IGCSE Report Writing English Top Tips
Edexcel IAL 2018 October Paper discussion
Top Mistakes You Should Avoid In Your Economics Paper
  • The use of the word

Often candidates in Economics exams, they often say that things will happen and we have an example here; the lowering of taxes will lead to a rise in GDP and unemployment will therefore fall. We can’t assume these things.

For example, lowering taxes could lead to a rise in GDP. All the things in the economy might happen to lead to a fall in GDP, so we can’t be 100% certain that things will actually always happen. So, we should really change the sentence to lowering taxes should lead to a rise in GDP, and unemployment could possibly fall or is likely to fall. This shows a lack of understanding of the economy; not everything, a certain. 99.999% at the time all factors are not held the same. So, nothing can be presumed.

  • The use of examples

So, the second mistake often people make is by drawing a diagram and then they give little or no explanation on the diagonal; just throw it in there, you will usually get little credit for this.

So, we’ve gone through about always being precise and also don’t always assume that some fingers demand or supplied normally as is here. Often things are supplied very inelastically. So, for example the supply of wheat is inelastic if demand for the week goes or not. A whole lot of weeks can be supplied because it takes a long time for that. Week to actually grow so you need to consider the elasticities when drawing your supply and demand curves.

Try to avoid rambling through large blocks of text. Often a lot of candidates see a question and then they go off on a large tangent about things that generally interest them but they aren’t actually answering the question. So, for example, a quick question here explains the reasons for the growth in GDP. So, start by answering the question, why one reason for a growth of GDP is because this and specifically honed in on the question and therefore you’re sort of answering the question and then the examiner can’t help.

We’ll give you marks. Also, remember if it doesn’t answer the question, you won’t gain any credit. So, you might be going against some really complex in-depth analysis of something. But, it’s not linked to the question. The examiner can’t reward you lastly.

One mistake that some candidates make is by being too controversial or biased. Avoid presenting radicals, socially transforming ideologies such as Marxism. In your essays, even if you think that they’re correct in under 40 minutes, you’ll probably not going to be able to find the time to justify your argument fully, and also there are some other reasons for avoiding going down. The route of becoming too radical. You probably won’t be answering the question directly. So, you’ll be rumbling on for a topic that doesn’t directly link the question as previously discussed and you could also lead the risk of the examiner disagreeing with you in agitating him and he could mark you harshly and you need to remember that they’re only human.

There’s something that annoys them subconsciously, they could more. You doubt one to two marks for something that they don’t agree with you how hardline. So, always try to give both sides of the argument. You probably haven’t considered your argument fully.

Remember you’re only an old student, you’re not a Ph.D researcher. So, don’t try and get too ahead of yourself.

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Adobe Photoshop 2020 Basic Tutorial

Hi everyone!! Find below some useful tips on using Adobe Photoshop 2020. Key highlights will be:

  • photo corrections
  • image manipulation
  • vector graphic designing for visual illustrations and artistic drawings.
Pure Mathematics 2013 November Paper discussion

Hi everyone. This video is based on the discussion of CIE 2013 November paper.

Lessons centered:

  • Graphs
  • Pythagoras Theorem
  • Quadratic Equations

Investment Appraisal

Welcome to this financial analysis lesson which will focus on the techniques for investment appraisal. After you have finished this lesson, you will be able to first understand the context of investment appraisal for creating value in business. Second, you can learn the investment appraisal techniques used in decision-making and thirdly understand sensitivity and scenario analysis to test whether you are making the correct decision, to begin with.

The aim of investment appraisal is to use available resources to create value in excess of the cost of the investment. In other words, considering the risk involved, the value of the expected future cash flows need to be greater than the investment to be made. And, for investors, investment appraisal is a useful way to gauge the kind of returns the organization is generating.

Investment appraisal also involves asking whether the returns are good enough and the best possible given the estimated risk levels. Investments with less predictable future cash flows will warrant a higher risk profile and vice-versa. The key here is for managers to strike a balance between the level of risk and the level of expected returns.

Investment Appraisal Process

The various steps in the investment appraisal decision process are; the first two steps focus on information gathering and require you to forecast the revenue costs and associated cash flows of your investment, also identify any potential limiting factors such as budget constraints, timings or a need to generate a specific rate of return on the investment.

The next two steps focus on selecting the appropriate investment appraisal technique and setting specific variables such as the discount rate and the time horizon. The final two steps in the process focus on improving the quality of the decision making by constructing sensitivity analysis and what-if type scenarios to help decide whether to consider or reject the investment.

Investment Appraisal Techniques

There are two simple techniques that are frequently used but which measure different outcomes.

The payback method measures the time it takes for you to get your money back and the return on capital employed method measures the amount of value created from the investment.

The two more complex techniques focus on discounting future cash flows and consider both the timing and risk aspect of the investment. The main methods here are the net present value and the internal rate of return. No investment appraisal technique can give the right answer or is the right technique for all situations and an organization may have its own preferred method.

The payback method simply measures how long it will take for the future returns to pay back the initial investment. This method is often suitable for organizations that have a set period. When investments need to be paid back by or there may be a set period, when funding is available for, if the investment payback is within the criterion payback period, then the investment can be considered. The payback method is simple to use and easy to understand and can be used to make a quick first assessment of an investment’s viability. If available capital is in limited supply and there is strong demand payback within a certain period, maybe a critical factor and it considers risk in a simple way which is the length of time, it will take before you recover your investment.

However, the main drawback of the payback method is that it ignores total returns over the life of the project it will favor a short-term project which returns investment quickly but might then tail off and not give long term returns over a longer life. It also looks at paying back the capital only not at how profitable. The return is in practice the payback method is normally used to complement other methods not the main technique.

Return on capital employed or ROCE which is calculated by taking project returns over the capital employed, gives the return generated by the investment by comparing the accounting profit to the required capital outlay of the investment. It is most commonly used by comparing the return to the minimum hurdle rate which must be achieved. This will often be an organization’s cost of capital which is how much it costs an organization to fund the investment such as the interest rate charged for a bank loan.

ROCE can also be used to compare different projects to establish which has the highest return on investment. The ROCE method is simple to use and easy to understand whereas the payback method focuses on the timing of the cash inflow, ROCE focuses on the profitability of the investment. As such, it can give a quick first assessment of the viability of an investment which is usually whether the return is higher than the organization’s minimum hurdle rate.

In addition, you can easily compare the ROCE of different investment options and it allows investors to use the same benchmark to evaluate management’s performance. However, ROCE ignores the time value of money meaning it could take many years to generate the required returns, the quantifiable size of the investment and the value creation is ignored. In addition, the level of risk involved needs to be assessed separately and using Accounting profit rather than cash flows can be open to interpretation.

Now, let’s consider the more complex and time-consuming investment appraisal techniques; net present value and the internal rate of return with NPV; future cash flows are adjusted to the present value to reflect the time value of money by using the discounting process. A key principle of NPV is that the present value of the expected future cash inflows must be at least equal to the present value of any cash outflows for the investment to be worth considering. The discount factor used in the calculation adjusts for risk and timing and the terminal value estimates cash flows after the forecast period into perpetuity.

IRR is when the rate of discount produces a zero NPV. You can think of IRR as the rate of growth a project is expected to generate. A project with a substantially higher IRR value than other available options would likely stand a better chance of being considered. With these discounted cash flow techniques, the time value of money is factored into the investment appraisal of an investment and the inclusion of a discount factor allows managers to include a risk component in the investment. The higher the discount rate, the higher the perceived risk.

The IRR makes it simple to compare investments and benchmark rates with hurdle rates or costs of capital and both methods allow for sensitivity analysis such as variations in the discount rate. However, the increased complexity of these methods does not necessarily result in accuracy. More variables can lead to more areas of uncertainty and some variables may be more sensitive to small changes than others. They can also be time-consuming to produce and if a limiting factor is obvious such as the availability of funding, then a simpler method such as payback may be more appropriate.

Now, that you have understood how to select the appropriate investment appraisal technique, the final steps in the process focus on improving the quality of the decision-making. Here, you can construct sensitivity analysis and what-if type scenarios to help decide whether to consider or reject the investment. Sensitivity analysis looks at the impact of changing one specific variable such as the discount factor or the initial upfront investment or certain costs being higher or lower than forecast.

By contrast, scenario analysis considers many uncertainties in different scenarios such as the emergence of a new competitor or a price war breaking out by creating a given set of scenarios. You can determine how changes in variables will impact the investment outcome and therefore the decision process. In summary, investment appraisal ensures available resources are used to create value in excess of the cost of the investment. There are several investor appraisal techniques available including payback, ROCE, NPV and IRR. When calculating your appraisals ensure you forecast future cash flows, identify any limiting factors and select the most appropriate appraisal technique for your needs. Then, set any variables and finally conduct sensitivity and scenario analysis to consider or reject the investment.

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Mass Vs Niche Markets

Here’s a short explanation of the difference between niche and mass marketing.  For an example one of my favorite products the humble potato crisp as we know you can just about buy a pack of crisps in particular Walkers crisps anywhere; garages, supermarkets, news agents, you name it you’ll find Walkers crisps in just about every outlet and they’re a great example of a mass-market product.

Walkers has over 55% of the market for crisps in the UK. It’s owned by a very large multinational called Pepsi and whilst it’s got a wide product range of different flavors essentially you’re buying Walkers crisps. You know exactly what you’re getting. However, there are also quite a large number of smaller crisp operators who try to operate in a niche segment.

For example O’donnell’s here who have a range of gluten-free crisps- traditionally hand cooked as well and you won’t find them in anywhere near as many outlets. You’ll find them maybe in  one or two selected supermarkets. Some delicatessens possibly but nowhere near the same kind of distribution that the mass market leader Walkers has and that’s quite a nice illustration.

The mass market is the biggest part of the market where there are, there may be many similar products offered by a number of competitors. The market may be dominated as it is in crisps by one large producer or possibly dominated by two or three but the key thing here is the biggest part of the market and customer needs are less specific. Needs and wants are less specific compare that contrast that with a niche market.

Of the overall market, a niche or a niche market segment is a smaller path; a smaller segment of a larger market and the reason why it’s smaller is that customers; there are fewer of them. But, they have more specific needs and wants.

In this case, with crisps gluten-free, so what can we say?  The implications of targeting trying to operate in a mass-market because it’s the biggest part of the markets and because you’re dealing with customers who have relatively fewer specific needs and once you can afford to make your products less specific and you can afford to go for high production outputs.

So, the key to success in mass markets is to have low unit costs and exploit economies of scale using unit costs and even better if you can align that also with having a brand and a name that is ubiquitous. The chances are that you create a very strong competitive position that you’re serving the biggest part of the market with a brand, a product that most consumers recognize and value and demand.

Mass-market brands that have captured a significant share of the largest part of the market from Gillette razors to Heinz beans and complex. So, to be successful with mass marketing, what you need well because it’s them the largest market; you clearly need to be able to target the widest possible customer base. If you can, the rewards are huge because your sales should be significant – in theory talk successfully targeting at mass market is lower risk. You’re pulling all your resources focused on to a large market that has the biggest possibility of making returns for you and if as we’ve said you can achieve those economies of scale and reduce your unit costs.

You should be able to target a mass market profitably. Why would a business target a niche?

Well, mainly because in a niche market, the potential for higher profit margins and the potential for differentiation of your products and service is greater. This is because we’ve said that in a niche market segment, customers have more specific need to want. Therefore, they’re probably  looking for a more differentiated product.

If a business has specialist skills, specialist knowledge, is able to differentiate its products from the mass-market offerings that it may be able to charge a higher price and earn a higher profit margin albeit to customers who are smaller in number than in the mass-market but do well and you may benefit from more loyal customers.

Clearly the drawback of targeting your niche is that you’re not or you’re less likely to gain from economies of scale simply because the output you’ll be operating at isn’t sufficient to get unit cost down low. However, you might argue that by targeting a niche and succeeding in a niche you’re less likely to attract a competition though that’s just an overview of the concepts of niche and mass markets

Having read the above, also check out the below video for a quick sneak peek review of niche vs mass marketing.

Velocity and Acceleration Time Graphs

In what follows you will be learning how to interpret and draw velocity and acceleration time graphs.

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