Value added approach to calculating GDP

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Value added approach to calculating GDP발음듣기

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[Instructor] In previous videos we talk about GDP as the market value of final goods and services produced in a country in a given time period.발음듣기

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Let's say in a given year and we gave the example of producing jeans where maybe the farmer helps produce the cotton.발음듣기

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And then the thread maker takes that cotton and makes thread and then the fabric maker takes the thread and makes fabric.발음듣기

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And then the jean maker takes the fabric and produces jeans and then the market value of those jeans was $50.발음듣기

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And so, assuming all of this happened in one year in the time period that we're measuring GDP for then we would just count the $50 if we're looking at the final market value or the market value of final goods and services.발음듣기

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You would say the GDP for at least for this component of the GDP from these jeans is $50.발음듣기

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But I do wanna clarify that there are multiple ways that you can measure GDP.발음듣기

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And you could even think about it from a value added approach but the key idea is no matter how you measure it you should get to the same value so let's think about the various actors here and what their value add was.발음듣기

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So, first, let's think about the framer right over here.발음듣기

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So, this is the farmer my not so elegantly drawn rectangle around what he's doing.발음듣기

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So, the farmer's value add is what?발음듣기

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Well, before you just had some dirt and things and so, maybe you could say that the market value was zero.발음듣기

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And then he's able to produce something or she's able to produce something that now has a market value of $10 so their value add is $10.발음듣기

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Now, from there, the cotton goes to the thread maker.발음듣기

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The threader maker they take that $10 cotton so this is thread maker they take the $10 cotton and are able to produce $20 worth of thread?발음듣기

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What is their value add?발음듣기

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Value add here?발음듣기

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Well, they took something worth $10 and they were able to do something to it to make it worth $20 so their value add is now another $10.발음듣기

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And then, this is the thread maker and then from there it goes to the fabric maker.발음듣기

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And I think you see where this is going the fabric maker is this part of our process fabric maker and their value add is what?발음듣기

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Pause this video and think about it.발음듣기

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Well, they take something worth $20 and they're to turn it into something that has a market value of $30 so their value add is also $1.발음듣기

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And then last but not least you have the jean company so the jean manufacturer I'll call them the jean producer the jean producer, they take something that has a market value of $30.발음듣기

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And they're able to sell it for $50 so their value add here if you take something for 30 and you make it worth 50 then you've added $20 of value.발음듣기

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And so, the value added approach to GDP will just sum up these value adds.발음듣기

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So this is going to be this $10 from the farmer plus the value add of the thread maker plus $10 from the thread maker plus $10 from the fabric maker plus $20 from the jean maker and what will that all add up to?발음듣기

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Well, that's all going to add up to 10 plus 10 is 20 plus 10 is 30 plus 20 is $50.발음듣기

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And lucky for us that is added up to the same amount as we had before where we just looked at the market value of the final goods and services.발음듣기

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Now, one benefit of the value added approach is that real supply chains are quite complex,.발음듣기

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And things might be going from one country to another, they might as we've talked about in another video, the year might end right over here.발음듣기

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And so, when something is made in China and there's value add in China but then it's shipped to the US and some value add is placed on it.발음듣기

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And then it's shipped back to China or Mexico you have to be careful to only count the value add in the country for which you are measuring the GDP.발음듣기

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So, that's one useful way or one useful reason or one way in which the value added approach might be useful.발음듣기

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The key idea though is that you're getting to the same value.발음듣기

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You should get to the same value as the market value of the final goods and services produced in a given time period.발음듣기

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