TITLE: Top 4 Car Companies Survey Using ANOVA (Single Factor)
Author: Isha Parekh
Introduction: This is a survey report that presents an analysis of the ratings provided by the students of The Top 4 Car Companies.
- Volkswagen: Founded in 1937, Volkswagen has evolved into one of the world’s leading automotive manufacturers. It is known for its innovative engineering and iconic models like the Beetle and Golf. The brand emphasizes sustainability and electric mobility in its future vision.
- Tesla: Established in 2003, Tesla is a pioneer in electric vehicles and renewable energy solutions. With its focus on innovation, the company has revolutionized the automotive industry through cutting-edge technology, particularly in electric drivetrains and autonomous driving features.
- Mercedes-Benz: Mercedes-Benz is the symbol of luxury and performance; it has a rich history dating back to 1926. It is Renowned for its engineering excellence and innovative safety features; the brand continues to set industry standards while expanding its electric vehicle lineup.
- Toyota: Founded in 1937, Toyota is recognized for its commitment to quality and efficiency, pioneering hybrid technology with the Prius. The company is a leader in sustainable automotive practices and continues to invest in hydrogen fuel cell and electric vehicle development.
Objective: To compare the rating of the Top 4 Car Companies.
Data Collection: I conducted a survey through Google Forms to explore ratings given to the Top 4 Car Companies. With responses from the students, I got an understanding which Company is favoured by the students. The rating was given on a scale of 1 to 10 of the Top 4 Car Companies.
Data Analysis: The ANOVA: Single Factor test was performed to compare the means of the ratings across the four genres.
The hypotheses for the test are:
- Null Hypothesis (H0): There is no significant difference in the average ratings of the Top 4 Car Companies.
- Alternate Hypothesis (H1): At least one of the companies has a significantly different average rating.
The results of the ANOVA: Single Factor test are as follows:
|
ANOVA: Single Factor |
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|
SUMMARY |
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|
Groups |
Count |
Sum |
Average |
Variance |
||
|
Volkswagen Group |
30 |
167 |
5.566667 |
10.87471 |
||
|
Tesla |
30 |
178 |
5.933333 |
6.547126 |
||
|
Mercedes-Benz Group |
30 |
167 |
5.566667 |
7.84023 |
||
|
Toyota |
30 |
148 |
4.933333 |
9.995402 |
||
|
ANOVA |
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|
Source of Variation |
SS |
df |
MS |
F |
P-value |
F crit |
|
Between Groups |
15.53333 |
3 |
5.177778 |
0.587425 |
0.624441 |
2.682809 |
|
Within Groups |
1022.467 |
116 |
8.814368 |
|||
|
Total |
1038 |
119 |
|
|
|
|
The above table shows P value as 0.62 which is more than 0.05 which means null Hypothesis is accepted.
Conclusion: All of them are the same.