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.
Hello :
an <span>equation of the line passing through the points (-3 5) and parallel to the y axis : x = - 3</span>
Answer: The answer is in the 1st image.
Explanation: The explanation is in the 2nd image.
Phospholipid molecules lead to the compartmentalization of a cell by <span>forming a barrier around it to keep everything separated</span>.
The 89th day is the answer.
