Answer:
90
Step-by-step explanation:
The sum of squares of the deviation from mean=sum(x-xbar)²=?
x
12
6
15
9
18
12
xbar=sumx/n
xbar=(12+6+15+9+18+12)/6=72/6=12
x      x-xbar       (x-xbar)²
12      12-12=0     0
6       6-12=-6     36
15      15-12=3      9
9       9-12=-3       9
18      18-12=6      36
12      12-12=0      0
sum(x-xbar)²=0+36+9+9+36+0=90
So, the sum of squares of the deviations from the mean is 90.
 
        
             
        
        
        
Answer: 10/3
Step-by-step explanation
 2/3x5
2/3x5/1
Now goahead and multiply the top and bottom numbers 
 
        
                    
             
        
        
        
Percent means parts out of 100
7%=7/100=0.07
'of' means multiply so 
7%=0.7
7% of 280=0.07 times 280=196
12%=0.12
12% of 300=36
2%=0.02
2% of $1250=$25
        
             
        
        
        
Answer:
heres the answer I think 
Step-by-step explanation:
-3 < x < 1/2