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Posts tagged "standard deviation" - Page 5

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Discussions Discussion Student footprints
Lauren L-USA, Oct. 9, 2013

Hi, my name is Lauren. After calculating my Carbon footprint, I realized that my lowest source of emissions was the purchases category. It was 1363 lbs of CO2 compared to the national average of 6563 lbs of CO2. This is probably due to the fact that I receive hand-me-downs from my cousins about twice a year. Receiving hand me downs is a great money saver, and it saves you from having to make trips to the mall. This in turn reduces your carbon footprint in the transportation category.

Lauren L-USA
Comments (1)
  • Naina Asaravala Naina Asaravala Oct. 20, 2013
    Hi Lauren!
    I agree that hand me downs are a great way to reduce the amount of purchases made by a person. I am the oldest of not only my sisters, but all of my close cousins as well, so I don't receive hand me downs that often. I also can only give hand me downs to one of my sisters, who is 2 years younger than me. Everyone else is far too young and small to be able to wear my clothing, unless they want to keep them for another 10 years (which they don't). Therefore, another good way of reducing purchases made of new clothes is to donate clothes to the Goodwill or other foundations or groups looking for donations - it feels really good to know that you are helping someone in need of clothing!

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Discussions Discussion Student footprints
Elena D-USA, Oct. 9, 2013

Hi! My name is Elena. Reducing waste is a great way to cut back on your carbon footprint. This is why I would suggest that we use reusable bags for shopping and groceries. If we could eliminate plastic bags from shopping in Texas, it would greatly diminish the carbon footprint of the state. Eliminating production of plastic bags in one state would then lead to the chain reaction of the stop of plastic bags in other states.

Elena D-USA
Comments (1)
  • Ellen A-USA Ellen A-USA Oct. 9, 2013
    I agree, using reusable bags for things such as shopping would help reduce our carbon foot print. I suggest that when you go to the mall try and use one bad and put all of your new stuff in that as opposed to carrying lots of bulky bags. Also some stores have options to get your receipt emailed to you instead of getting it printed.

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Discussions Discussion Student footprints
Jessica Muffley, Oct. 9, 2013

My carbon footprint was 22,404. My environmental science class had footprints ranging from 4,786kg-198,982kg carbon released. I noticed that the most differences in carbon released were in food. A lot of people in my class eat vegetarian/organically while others eat non vegetarian. In my own carbon footprint about 11,000kg of carbon is released because I don’t eat vegetarian. The rest of the carbon I released was due to my house. To lower my carbon footprint I’m going to eat more organically and use less electricity in my house.

Jessica Muffley
Comments (3)
  • BeomSu P-USA BeomSu P-USA Oct. 9, 2013
    good idea to eat less food but you should eat some vegetables too.
  • Helena B-USA Helena B-USA Oct. 9, 2013
    Hi Jessica, I am from the US and my total carbon footprint is 22913 kg of carbon per year. I too need to cut down on the electricity used in my home. How do you plan on doing that? You may want to check what kind of light bulbs you have incandescent bulbs, you may want to think about switching to CFL bulbs. According to http://eartheasy.com/live_energyeff_lighting.htm “CFLs are four times more efficient and last up to 10 times longer than incandescentss.” Because they last longer they are also saving you money. Even though they take a few seconds to heat up, they are worth it. “Replacing a single incandescent bulb with a CFL will keep a half-ton of CO2 out of the atmosphere over the life of the bulb.” Think about replacing every single bulb in your house and how much CO2 you could be saving.
  • Angela L-USA Angela L-USA Oct. 9, 2013
    Another way to put out less carbon through food would be to eat more locally grown and raised food. Most of the food I eat puts out carbon, because I do not eat vegetarian food.

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Discussions Discussion Student footprints
Alyssa White, Oct. 9, 2013

My carbon footprint was higher than the average for my region, but lower than the average for my class. My carbon footprint was 18,462. For transportation mine was 1,296, which was low for my region. For my home it was 12,572,which was higher than the average for my region. For food it was 3,851 which was about average for my region, and for purchases I was under the average for my region with 743.

Alyssa White
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Discussions Discussion Student footprints
Channing Mink, Oct. 9, 2013

My carbon footprint was higher than I expected. My results were higher in everything except purchases. In this category I had 559 kg and the average for my region was 1191 kg. My results for transportation were much higher than average. I got 17211 kg and the average was 2557 kg. My results for home and food were a little higher than average, but not by that much.

Channing Mink
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Discussions Discussion Student footprints
Gabby B, Oct. 9, 2013

For my Environmental Science class we all had to calculate our carbon footprint in order to see how much of an impact we were personally having on the environment. I expected my footprint to be close to the average person in my state and country, however, my results were actually worse than the average. The majority of my carbon footprint came from traveling. With 4 plane flights in the past year, and with driving so frequently, my total was close to 9000 just for that section. My purchases was the lowest total, which was the overall consensus from the rest of my class as well. My house wasn’t too bad because I’m not home very often so I don’t use very much electricity. Also, in my household we try to leave the air conditioning off as much a possible, along with the heat. We use fans mostly, and luckily it doesn’t get cold enough in my region that we would need to use the heat often. My food consumption was lower than average, I don’t eat very much meat or have a large intake of calories daily. Overall, my total footprint came to 16,775. Which was about the average in my class, but slightly larger than the average in my region.

Gabby B
Comments (1)
  • Kyler N Kyler N Oct. 9, 2013
    yeah I guess I can relate to that, where just my transportation footprint was the same as the average person in Hong Kong. I know I could change my footprint by not taking flights everywhere though I have to so I can be with my family over the holidays.

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Discussions Discussion Student footprints
Angela L-USA, Oct. 9, 2013

Hi. My name is Angela. For my biology class, we had to calculate our carbon footprint. I partially expected my carbon footprint to be extremely high because the USA has more resources than other countries around the world. I realized through this project that three of the four categories were lower than the average for my region. But, I also noticed that I put out a lot of carbon from my home in daily activities like showering and using lights.
I walked around my house looking for ways that I could decrease my carbon output. I realized that a large majority of my lights were incandescent. I have always heard that CFLs were better, but I didn’t know exactly how so I looked it up. I read that CFLs last significantly longer. Incandescent bulbs last about 2,000 hours while CFLs can last up to 35,000 hours. The price for CFLs is a little more expensive, but eventually CFLs will give you more for your money. Also, CFL bulbs are just better for the environment and they save energy.
In order to put out less carbon, I am slowly going to change every light bulb in my house when they burn out. I will go from incandescent bulbs to CFLs. Hopefully, the overall outcome of this will be that I put out less carbon and not spend more money than necessary.

http://www.diffen.com/difference/Fluorescent_Bulbs_vs_Incandescent_Bulbs
Angela L-USA
Comments (1)
  • otto charity otto charity Oct. 9, 2013
    Hello, today in class I had to find out how much carbon I emit per year. I thought that I would emit the same amount of carbon as an average person, but instead I have gone almost as 3 times the amount more! Most of the carbon is produced in my home, where I think is produced from the many incandescent light bulbs I have turned on throughout the day.

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Discussions Discussion Student footprints
Ngozi N- USA, Oct. 9, 2013

Hello! My name is Ngozi and I’m from the US. My total was 8258 kg of CO₂ per year, compared to the average of 23400 kg of CO₂ per year for my region. As you can see, my carbon footprint total was pretty much below average, which didn’t surprise me. The most is produced from Home and the least comes from Purchases. The Purchases part didn’t surprise me at all. I hardly shop, and in the rare instances that I do, it’s usually recycled or out of necessity. I’m also very cautious of what I use, and what I need and don’t need. I recycle mostly at school and tend to reuse more at home.

However, home is where the most CO₂ is produced for me. As much as I want to say it didn’t, this calculation really did surprise me at first, but when I reflected on it, I quickly realized the problem. The AC is always on in my house! I’m not a big fan of the cold, but when it comes to whether the AC should be on or off, it’s two of them against one of me. I’m usually left wrapped up in a blanket.

I really believe that the period of time we leave on the AC heavily contributes to the amount of CO₂ that not only I produce each year, but also that my household produces. Cutting down the amount of time the AC is on and also the amount of time the lights are on would definitely make a positive impact on my carbon footprint. For my family, these are the two main contributors that have to be cut down. The only problem now is getting the rest of my family on board!

Ngozi N- USA
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Discussions Discussion Student footprints
Rhianna R-usa, Oct. 8, 2013

My carbon footprint was lower than the average for my region but, it was still higher than it needed to be. I had to pick a project that would reduce my carbon footprint. For this I chose to replace all of the light bulbs in my room, hallway, closet and bathroom. I chose to do this because I have incandescent light bulbs in my room. When I researched the difference between incandescent light bulbs and Compact Florescent light bulbs, I came up with some interesting data.

CFLs have an average lifespan of about 8,000 hours while incandescent bulbs last only about 1,200 hours. CFLs also used less watts per unit of light (lumens). Per year, incandescent bulb users pay an average of $328.59, while CFL users pay only an average of $76.65. But most importantly to this project, incandescent bulbs give of 4500 pounds of Carbon Dioxide per year while CFL bulbs only emit 1051 pounds per year.

This project was very simple and it only took about 5 minutes of my time. It made a difference! If everyone took the time to change just a couple light bulbs in their home, we would able doing our part to help lower our carbon footprints.

http://www.designrecycleinc.com/led%20comp%20chart.html
Rhianna R-usa
Comments (1)
  • Reece V, USA Reece V, USA Oct. 9, 2013
    Thanks for the information Rhianna! I will be changing the light bulbs in my house in the near future.

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Discussions Discussion Student footprints
Angelina A-US, Oct. 8, 2013

My name is Angelina and I recently calculated my carbon footprint. I was very surprised by my results because my carbon footprint number exceeded both the average in my state and worldwide. My biggest component was transportation. While this did not surprise me, what did was how much energy my family needs in our household. 9828 kg are used and I find that shocking. I went back to see what the largest producer of that carbon is. Believe it or not, it was the light bulbs in my house. Realizing that I have this impact on the world has really changed my perspective on the environment. I think that everyone should be aware of their carbon footprint because if just a small teenage girl produces so much carbon, imagine what everybody else’s is. Do your results differ from mine? If so share them below!

Angelina A-US
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