19. The Sea Mist Hotel collects customer satisfaction data daily. Yesterday, the hotel
was 999%6 occupied and the manager wanted to quickly assess customer satlsfaction
She 9 selected 10 scores, The maximum score is 100 points. Ihe mean score
1s 82.1. The TO scores were: 2
| 655 bo 夫、S9. MS、13. 八,人.、 tee
及 v 畫 凋
[86 96 |68| 93|99| 100| 801 55160|84
What is the variance? 262.544
(的-207+ tto-6230)((68-8201tU9- (tt 32.0
lu
