Question

value is 12, mean is 20, and standard deviation is 2.8

Answer 1

Lets find the upperlimit and lower limit of data .

• Lower limit=Mean-SD=20-2.8=17.2
• Upper limit=Mean+SD=20+2.8=22.8

Hence the value 12 isn't included in data

Answer 2

Step-by-step explanation:

Lower limit= Mean-Standard Deviation=17.2

Upper limit=Mean+ Standard Deviation= 22.8

Hence, 12 isn't included in data