The standard deviation of a portfolio is the square root of the variance.
The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.
The term "standard deviation" (or "") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.
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Answer: y/2
Step-by-step explanation:
Since the x would equal to 3’s and the y equals to 2’s then it would basically be simplified to y/2
The setup looks like this:
0.4(10) + 4x = 0.3(14)
the 14 is the total amount of acid added.
4 + 4x = 4.2
4x = 0.2
x = 0.05 or 5 % acid solution
Answer:
c
Step-by-step explanation:
