TITLE: “A comparison of four Refrigerator Brands: Blue Star, BOSCH, LG and Godrej using a one-way ANOVA (Analysis of Variance) single-factor method.”
Author: Ashwin Dhumal
Introduction: Customer happiness is one of the most important measures of a brand’s popularity and performance in the fiercely competitive refrigerator business. Leading refrigerator manufacturers Blue Star, BOSCH, LG, and Godrej each have a wide range of products to meet different customer needs. Customer ratings provide important information about how well these products perform in terms of features, durability, picture quality, and overall user experience.
Objective: “To compare the ratings of four refrigerator brands.”
Data Collection: I gathered feedback from my friends about four refrigerator brands: Blue Star, BOSCH, LG and Godrej and asked them to rate each brand on a scale from 1 to 10. To analyse the collected data, a one-way ANOVA (Analysis of Variance) was used to determine if there are significant differences among the four brands.
Data Analysis: The ANOVA: Single Factor test was performed to compare the ratings of four brands.
The hypotheses for the test are:
- Null Hypothesis (H0): All are same.
- Alternate Hypothesis (H1): Anyone of them is different.
The results of the ANOVA: Single Factor test are as follows:
|
ANOVA |
|
|
|
|
|
|
|
Source of Variation |
SS |
df |
MS |
F |
P-value |
F crit |
|
Between Groups |
6.69 |
3.00 |
2.23 |
0.33 |
0.80 |
2.66 |
|
Within Groups |
1114.43 |
164.00 |
6.80 |
|
|
|
|
|
|
|
|
|
|
|
|
Total |
1121.12 |
167.00 |
|
|
|
|
The above table shows P vale as 0.80 which is more than 0.05 which means NULL Hypothesis is accepted.
Conclusion: All are same.