To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I ordered a 4-pack of bulbs. While the order arrived quickly, the first bulb I put in the lamp went "poof." So basically, I got three bulbs instead of 4. I need the lamp I use them in so I really don't want to go through the hassle of returning the whole package for just one bulb. I guess poor quality control wins.