Maybe u should try a graph
Answer: 57
Step-by-step explanation:
Answer:
(x2-x1)+(y2-y1)
Step-by-step explanation:
X2=0
X1=1
y2=9
y1=6
(0-1)+(9-6)
-1+3
2
Answer: A. 1.2
Step-by-step explanation:
Given : Sample size : n= 64
Standard deviation: 
The formula to find the standard error of mean is given by :-

Therefore, the standard error of the mean= 1.2
Hence, A is the right option.