Intelligence vs. Brain Size

Intelligence vs. Brain size

Collection project was designed to teach students how to collect, and organize, describe and document data using Excel lists and graphs. I chose this particular subject to research to further my understanding of the evolution of human species. “Can intelligence and brain size be directly related, and as intelligence increases, what happens to the size of our brains? I conducted my research through the internet by searching for previous, creditable research by someone trained in the field of Anthropology. My hypothesis is that as humans evolve, and intelligence increases, so do the size of the brain. The tools used in this project were the website from which I obtained the information and Microsoft excel which I used to document and chart the data. Using that data I was able to formulate a graph and a mathematical model that could test and support my hypothesis.

The mathematical model formulated from the graphed data will allow future testing to see if the trend still continues, or if the size of a human brain reaches a maximum or minimum. The goal was to chart previous data collected by experts to support my hypothesis as well as predict and test the size of human brains in the future if the trend continued and develop a linear equation to represent the findings. I began by collecting 12 points of data on the average size of human brains at a specific time (years) in history. I recorded the average size of the brain in the year that correlated it. After collecting the data, I plotted the data in Excel and used the best line fit to give me a linear equation/linear regression model to represent my data. See table below: We entered the data is as follows: The independent variable was the number of rubber bands that represented the x-axis. The dependent variable was how far the egg fell, which represented the y-axis. We chose a domain of 0 to 25 because the number of rubber bands we used ranged from 0 bands to 15 bands.

By choosing a domain or an x-axis of this amount, it gives you a graph that allows you to see the line past 15 rubber bands. We went with a range for 0 to 90 inches because according to our data, the maximum number of inches that the egg dropped was 67 inches so in order to get a better picture of the data we extended the y-axis to 90 inches. The linear regression model that fitted our data was D(r) = 3. 948r + 5. 758, with the y-intercept being (0, 5. 758) and m= 3. 948 inches. Interpretation for the data in the context of the study based on our linear regression model, is at zero rubber bands, the egg would fall 5. 758 inches, and with each added rubber band the egg would fall an additional 3. 948 inches. To test this linear regression equation we were given a length of 67 inches.

To mathematically solve for 67 inches to predict the number of rubber bands needed, we solved for (r) as follows: D(r) = 3. 948r + 5. 758 67(r) = 3. 948r + 5. 758 r = 15. 5. What we concluded from our mathematical prediction was that it would take 15. rubber bands to have a successful fall of 67 inches. Because it was not realistic to use 15. 5 rubber bands, we went with 15 instead. This was a realistic prediction because the length that the egg fell was 66 inches, without imposing any damage to the egg and leaving us 1 inch from the original test value of 67 inches. Had we used 16 rubber bands instead, based on our linear regression model which states that for every rubber band added the egg would fall an additional 3. 948 inches it would have left our fall around 69. 48 inches and as a result leaving us more than 2 inches from the original test value of 67 inches.

The reasons for error in the project could be based on several components. The elasticity of the rubber bands varies from band to band which would cause a difference in the length of the fall and a change not resulting in a slope of 3. 948 inches. During the earlier part of the project, for an unknown reason, but not as a result of the test, the egg cracked, resulting in a possible change in the distribution of the weight of the egg and affecting the resulting length of the fall. And furthermore, if our linear regression equation was tested in the future, the results may not be the same if another egg was used due to the mass of every egg varying. In summary, after testing several jumps involving a different number of rubber bands each time and recording the corresponding length of how far the egg fell we had enough data to plot a scatter graph and formulate a linear regression equation that we could test any hypothesis without having to repeat the project itself. Discoveries made during the project was the close comparison in the tested data and the mathematical equation formulated by using excel or a scientific calculator. For example, when we tested 1 rubber band, the egg fell 10. 5 inches.

Using the equation to solve for the answer: D(r) = 3. 948(r) + 5. 758 D(r) = 3. 948(1) + 5. 758 D(r) = 9. 706 inches The experiment itself and the equation formulated from it, although not precise, it is an accurate representation of real outcomes of the amount of stretch in the rubber bands as shown in the comparison model above.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with MyHomeworkGeeks
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Business and administrative studies
excellent work
Customer 452773, March 12th, 2023
Business and administrative studies
excellent work
Customer 452773, March 9th, 2023
Great job
Customer 452773, February 13th, 2023
thank you so much
Customer 452749, June 10th, 2021
Thank you!
Customer 452545, February 6th, 2021
Looks great and appreciate the help.
Customer 452675, April 26th, 2021
Business and administrative studies
always perfect work and always completed early
Customer 452773, February 21st, 2023
I just need some minor alterations. Thanks.
Customer 452547, February 10th, 2021
10th grade English
very good
Customer 452773, March 26th, 2023
Thank you for your hard work and help.
Customer 452773, February 13th, 2023
excellent job made a 93
Customer 452773, March 22nd, 2023
English 101
IThank you
Customer 452631, April 6th, 2021
Customer reviews in total
Current satisfaction rate
3 pages
Average paper length
Customers referred by a friend
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat

Sometimes it is hard to do all the work on your own

Let us help you get a good grade on your paper. Get professional help and free up your time for more important courses. Let us handle your;

  • Dissertations and Thesis
  • Essays
  • All Assignments

  • Research papers
  • Terms Papers
  • Online Classes