Could anyone suggest a way to compare the following two set of data
data 1 :
Mean average=54.7 gram
standard deviation = 1.1 gram
Mean average=50.3 gram
standard deviation = 3.7 gram
I have tried the normal distribution on the first set of data only to end up getting z score of -4.27 ,I can change this to positive but the z score table end with 3-4 maximum limit
Is there any other method to compare these two set of data?