Title- Ratings/Experience of people regarding watches out of 10
Introduction- Compared the most helpful customer ratings of the best rated products of watches. These products are shortlisted based on the overall rating and the number of customer reviews received by each brand.
Author- Ishita Ghosh
Objective- The comparison of 4 different brands of watches.
Literature Review:
Feasibility and Reliability of Smart Watch to Obtain 3-Lead Electrocardiogram Recordings
This study aimed to assess the feasibility and reliability of smartwatch to obtain 3-lead ECG recordings, the classical Einthoven ECG leads I-III compared to standard ECG. To record lead I, the watch was worn on the left wrist and the right index finger was placed on the digital crown for 30 s. For lead II, the watch was placed on the lower abdomen and the right index finger was placed on the digital crown for 30 s. The results of this study suggested that the examined smartwatch could obtain 3-lead ECG tracings, including Einthoven leads I, II, and III by placing the smartwatch on the described positions (Behzadi et al)
Behzadi, A., Alireza, S. S., Mouratis, K., Hindricks, G., Arya, A., & Bollmann, A. (2020). Feasibility and reliability of SmartWatch to obtain 3-lead electrocardiogram recordings. Sensors, 20(18), 5074. doi:http://dx.doi.org/10.3390/s20185074

Data Analysis- ANOVA
Data collection-
Anova: Single Factor

SUMMARY
Groups Count Sum Average Variance
Fastrack 35 320 9.142857 0.773109
Timex 35 298 8.514286 0.904202
Casio 35 313 8.942857 0.996639
Titan 35 330 9.428571 0.546218

ANOVA
Source of Variation SS df MS F P-value F crit
Between Groups 15.50714 3 5.169048 6.420842 0.000423 2.671178
Within Groups 109.4857 136 0.805042

Total 124.9929 139

Conclusion –
The rating of watches after surveying we see that p value that is 0.0004 is less than .05 so it has a significant impact , F(3,136)= 6.42.
References-
Survey (Google form)