Answer:
The correct option is b.
Step-by-step explanation:
The formula for standard deviation is

where,
is mean of the data and n is number of observation.
The variance of a stock's returns can be calculated by the above formula.
Variance of stock's returns is the average value of squared deviations from the mean.
Therefore the correct option is b.
Answer:
X=10.2
Step-by-step explanation:
Answer:
√
15 +
√
10
Step-by-step explanation:
The answer is above
Answer:
$19.24 is the overtime rate $579.67 one week
Step-by-step explanation:
So $13.00 its $19.50 so I subtracted $12.74 to $13.00 got 0.26 then subtracted $19.50 by 0.26 and got $19.24
$12.74 times 45.5 that will be $579.67 for just one week
If I didn't get it right. Tell me in the comments. I think I got it right.