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4 years ago

Which equation represents the function shown on the graph

Mathematics

1 answer:

Dovator [93]4 years ago

3 0

Your answer is B. y=4x, the photo I added shows my steps.

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Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for t

rjkz [21]

Answer:

COV (all stocks) = 0.55

COV (stocks and bonds) = 0.82

Step-by-step explanation:

Coefficient of Variation is used to measure variability.

It is defined as the ration of standard deviation and the mean.

It can be used to compare variability of two population or two samples.

Formula:

$\text{Coefficient of Variation} = \displaystyle\frac{\text{Standard Deviation}}{\text{Mean}}$

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

x: 14, 0, 39, 25, 32, 27, 28, 14, 14, 15

$Mean = \frac{208}{10} = 20.8$

$Standard~Deviation = \sqrt{\frac{1169.6}{9} } = 11.39$

$Coefficient~of~Variation = \frac{11.39}{20.8} = 0.55$

y = 6, 2, 29, 17, 26, 17, 17, 2, 3, 5

$Mean = \frac{124}{10} = 12.4$

$Standard~Deviation = \sqrt{\frac{924.4}{9} } = 10.13$

$Coefficient~of~Variation = \frac{10.13}{12.4} = 0.82%$

Since coefficient of variation of x is less compared to y, thus it could be said bonds does not reduce overall risk of an investment portfolio.

6 0

3 years ago

What are the coordinates of the point?

cestrela7 [59]

Answer:

(6,-4)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

If the following system of equations was written as a matrix equation in the form AX = C,? and matrix A was expressed in the for

LenaWriter [7]

The given equations are
5x + 7y = 7
3x - 2y = 9

As a matrix equation,
A = [5 7
3 -2]

X = [x
y]

C = [7
9]
That is
a =5, c=7; and b=3, d=-2

a - b + c + d = 5 - 3 + 7 + (-2) = 7

Answer: 7

4 0

3 years ago

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Brittany is planning a party with her parents.After collecting the following information from two possible locations,Brittany is

vladimir1956 [14]

Depends on how many ppl are coming to party

4 0

4 years ago

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The batteries produced in a manufacturing plant have a mean time to failure of 30 months, with a standard deviation of 2 months.

Oduvanchick [21]

Answer:

The population mean.

Step-by-step explanation:

29.9 is the sample mean.

8 0

4 years ago