which stem-and-leaf plot represents the data 80, 81, 91, 92, 66, 55, 54, 30, 55, 79, 78?
key for picture one is Key: 5|0 means 50
pic 2 Key: 5|4 means 54
pic 3 Key: 5|4 means 54
pic 4 Key: 5|4 means 54



