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lidiya [134]
3 years ago
14

What does a residual value of –0.8 mean in reference to the line of best fit?

Mathematics
2 answers:
dybincka [34]3 years ago
6 0

Answer:

<em>Residual value of -0.8 means the actual point is 0.8 units below the best fit line.</em>

Step-by-step explanation:

The difference between the observed value of the dependent variable and the predicted value is called the residual.

Mathematically,

e = y -\hat{y}

where,

e = residual,

y = observed value,

ŷ = predicted value.

When the residual is negative, the data point is below the graph or best fit line.

Residual value of -0.8 means the actual point is 0.8 units below the best fit line. It also means that the actual value is 0.8 lesser than the predicted value.

stiks02 [169]3 years ago
5 0
<span>The given point is 0.8 units below the line of best fit </span>
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Which expression is equivalent to (x6x10
yan [13]

Answer:

In solving an equation where one fraction is equal to another fraction we can use the method of cross-multiplication

⇒x+6x=107

Now multiply the red terms together, the blue terms together and equate them.

⇒10x=7(x+6)

distribute the bracket.

5 0
3 years ago
the number of steps per day is said to be related to fitness level (as measured with vo2 testing). which type of validity is des
taurus [48]

The term "concurrent validity" refers to the relationship between step count with vo2 data.

<h3>Define the term concurrent validity?</h3>
  • The degree of agreement between two measurements or assessments made at the same time is displayed by concurrent validity.
  • It contrasts a brand-new test with one that has already undergone testing and been shown to be reliable.

You wish to evaluate a new survey that measures employee commitment's concurrent validity. In order to accomplish so, you may:

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There is a connection between daily step count and fitness level (as collected with vo2 testing)

Thus, the term "concurrent validity" refers to the relationship between step count with vo2 data.

To know more about the concurrent validity, here

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5 0
1 year ago
Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36
castortr0y [4]

Answer:

The additive property of equality.

Step-by-step explanation:

36 is added to both sides of the equation.

3 0
3 years ago
The equation y=5x2+6 is what kind of equation
agasfer [191]
This is a quadratic equation because it has degree 2.
As known as a parabola
6 0
3 years ago
A surveyer wants to find the distance from points A and B and to an inaccessible point C. These three points form a triangle. Be
Vinil7 [7]

Answer:

42.8°

Step-by-step explanation:

The sine rule states that for a triangle with lengths of a, b and c and the corresponding angles which are opposite the sides as A, B and C, then the following rule holds:

\frac{a}{sin(A)}=\frac{b}{sin(B)}  =\frac{c}{sin(C)}

Given that points A, B and C forms a triangle with angle A = 65°, distance from A-to-C = 90 m and the distance from B to C = 120 m.

The distance from A to C is the side opposite to angle B. Hence let b =  distance from A to C = 90 m.

The distance from B to C is the side opposite to angle A. Hence let a =  distance from B to C = 120 m.

Therefore using sine rule:

\frac{a}{sin(A)}=\frac{b}{sin(B)}  \\\\\frac{120}{sin(65)}=\frac{90}{sin(B)}  \\\\sin(B)=\frac{90*sin(65)}{120} \\\\sin(B) =0.6797\\\\B=sin^{-1}(0.6797)\\\\B=42.8^o

7 0
2 years ago
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