Thomas used the online chat function for two retailers, Better Buy $($BB$)$ and Quick Serv $($QS$).$ He had developed four attributes and

predetermined weights to evaluate his online experience. He then used a $0$ to $5(5$ is highest$)$ scale to assign value ratings to each

retailer. Use his data to determine the evaluation measure $R$ for each retailer. Which retailer offered a better experience for Thomas?

The evaluation measure for Better Buy is

The evaluation measure for Quick Serv is

$]$ offered a better experience for Thomas.