11-15 December’s Journal

 This week we started by exploring a given data set. And we are asked to write a couple of questions and interpret our findings and why we may achieve such a result. Getting hands-on with the data brought the theory to life and made me realize how asking right questions is key to unlocking the good stuff. And I learned a lot about cars :)


The activity that we have done with Süeda;

Our questions:
1. Is there a relationship between the estimated miles per gallon in city and highway driving and people's choices of fuel types?
2. Is there a relationship between the air volume swept by the pistons inside the engine's cylinders and the car's drivetrain?
3. Is there a relationship between the estimated miles per gallon in a combination of city and highway driving and the number of cylinders in an engine?
4. Is there a relationship between a vehicle user's savings and spending over five years compared to an average car and the estimated miles per gallon in city and highway driving?


We chose the third question.

The cylinders in a car's engine refer to the cylindrical chambers where the combustion of fuel and air takes place. The number of cylinders in an engine varies among vehicles and can range from 4 to 12 or more, depending on the design and purpose of the engine. So, cylinders play a crucial role in the combustion process, converting fuel into mechanical energy to power the car. The number of cylinders can affect factors like performance, efficiency, and the overall design of the engine.


We are going to investigate it’s effects on the estimated miles per galloon in city driving and highway driving of a car. We observed a graph that has a negative slope while investigating the effects of the number of cylinders on the estimated miles per gallon (MPG) in city driving and highway driving, it suggests that there might be an inverse relationship between the two variables.


From the graph, we observed that the number of cylinders are aggregated on 4 and 6 in a car which is aligned with the automotive industry. The observation that high-performance cars, such as those with 12 cylinders (common in luxury and sports cars), tend to have lower miles per gallon is consistent with the trade-off between power and fuel efficiency. High-performance engines often prioritize power and speed, leading to increased fuel consumption and lower MPG.


In this context, a negative slope typically indicates that as the number of cylinders increases, the estimated MPG tends to decrease. This could be due to various factors which is mentioned above such as increased engine size, higher power output, and potentially higher fuel consumption associated with more cylinders.

The pictures of our data that is randomly done for 300 samples two times:

  


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