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Svetlanka [38]
3 years ago
5

The standard deviation and the mean of 16 values are 15.6 and 20.5. What is the coefficient of variation ?​

Mathematics
1 answer:
EastWind [94]3 years ago
5 0

Answer:

CV = coefficient of variation = 0.761

Step-by-step explanation:

The coefficient of variation is defined as the standard deviation divided by the mean of a population, which in this case,

standard deviation = 15.6

mean = 20.5

CV = coefficient of variation = 15.6/20.5 = 0.761

Note that if the 16 values form a sample (i.e. not the entire population), the above result is an estimate of the CV.

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V2 - 15 = -2v Solve the Quadratic. What are the 2 solutions?
ki77a [65]

Answer:

v=-5 and v=3

Step-by-step explanation:

We are given that

v^2-15=-2v

We have to find  two solutions of quadratic equation.

v^2+2v-15=0

Using addition property of equality

v^2+5v-3v-15=0   (By using factorization method)

v(v+5)-3(v+5)=0

(v+5)(v-3)=0

Substitute each factor equal to 0

v+5=0 and v-3=0

v=-5 and v=3

Hence, two solutions of quadratic equation are

v=-5 and v=3

8 0
3 years ago
Which relationship has a zero slope
vesna_86 [32]

Answer:

The first table.

Step-by-step explanation:

A slope of 0 means that as x increases, y stays the same.  In the first table, all of our y-values are 2; this means that y stays constant.  

To prove it, we use our formula for slope:

m=\frac{y_2-y_1}{x_2-x_1}

The slope of the line between the first two points is

(2-2)/(-3--1) = 0/-2 = 0

The slope of the line between the second pair of points is

(2-2)/(-1-1) = 0/-2 = 0

The slope of the line between the next pair of points is

(2-2)/(1-3) = 0/-2 = 0

Since the slope between each pair of points is 0, the slope of the entire line is 0.

4 0
3 years ago
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Please Help<br> What is the equation of the line?
Rama09 [41]

The line doesn’t appear to be moving, so I believe it’s just y=4.

4 0
3 years ago
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Factor 6(×)^3+43(×)^2+79(×)+12
Marysya12 [62]
The answer is (6x+1)•(x+4)•(x+3)
3 0
3 years ago
A right angle has a league of 13 cm in the hypotenuse of 21 cm what is the length of the other leg
natta225 [31]
You can use c^2 = a^2 + b^2 to solve for the length of the other leg. Just substitute the values to the variable then transpose to get the value of the missing variable.

Given: a = 13; c = 21
Required: b - other leg
Solution:
   c^2 = a^2 + b^2
 21^2 = 13^2 + b^2
   441 = 169 + b^2
  b^2 = 272
  <span>√b = 16.49
    b = 16.49 cm</span>
8 0
3 years ago
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