Answer:
A = 2.48
B = 7.48
C = 14.96
Step-by-step explanation:
A, the formula of Mean is similar to Average so it is, Mean = Total amount / Numbers of data :
Total = 3.9 + 2.1 + 0.8 + 1.5 + 4.1
= 12.4
Data = 5
Mean = 12.4/5
= 2.48
B, given that each data increased by 5, so you have to add 5 to all the data :
Total = (3.9+5) + (2.1+5) + (0.8+5) + (1.5+5) + (4.1+5)
= 37.4
Data = 5
Mean = 37.4/5
= 7.48
C, the new data is again doubled, so you have to multiply 2 to every data :
Total = 2(8.9) + 2(7.1) + 2(5.8) + 2(6.5) + 2(9.1)
= 74.8
Data = 5
Mean = 74.8/5
= 14.96
