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3 years ago

What is the effect of an outlier on the MAD (mean absolute deviation) of a data set.

1 answer:

8 0

The answer is D because a outlier when given a set of data could possibly have the chance of increasing or decreasing the MAD

Hope this helped :)

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Show how you did it

tankabanditka [31]

Answer:

7 3/5

Step-by-step explanation:

$6 \times \frac{8}{5} = \frac{38}{5} = 7 \times \frac{3}{5}$

4 0

4 years ago

The assumption that YZ is perpendicular bisector of AX is not enough to show hat YXZ equals YAZ

d1i1m1o1n [39]

<span>The assumption that YZ is perpendicular bisector of AX is not enough to show hat YXZ equals YAZ is false</span>

8 0

3 years ago

Read 2 more answers

A rocket is launched from a tower. The height of the rocket, why in feet is related to the time after launch, X and seconds, by

Maru [420]

Given:

Consider the height of the rocket, in feet after x seconds of launch is

$y=-16x^2+152x+74$

To find:

The time at which the rocket will reach its max, to the nearest 100th of a second.

Solution:

We have,

$y=-16x^2+152x+74$

It is a quadratic polynomial with negative leading coefficient. So, it is a downward parabola.

Vertex of a downward parabola is the point of maxima.

To find the time at which the rocket will reach its max, we need to find the x-coordinate of the vertex.

If a quadratic function is $f(x)=ax^2+bx+c$ , then the vertex is

$Vertex=\left(-\dfrac{b}{2a},f\left(-\dfrac{b}{2a}\right)\right)$

Here, $a=-16,b=152,c=74$ .

So,

$-\dfrac{b}{2a}=-\dfrac{152}{2(-16)}$

$-\dfrac{b}{2a}=-\dfrac{152}{-32}$

$-\dfrac{b}{2a}=4.75$

So, x-coordinate of the vertex is 4.75.

Therefore, the rocket will reach its max at 4.75 second.

8 0

3 years ago

Which graph shows the solution to the following inequality?

LenaWriter [7]

Answer:68-35

Step-by-step explanation:

8 0

3 years ago

Jeremy's father drives him to school in rush hour traffic in 20 minutes. One day there is no traffic, so his father can drive hi

nexus9112 [7]

Hello.

Let's call the initial speed 'x'. When driving at that speed, Jeremy's father takes 20 minutes to arrive to the school. When driving 18 mph faster (x + 18), he gets there in 12 minutes. Therefore:

20 - x
12 - x + 18

As they're inversely proportional:

12 - x
20 - x + 18

$\frac{12}{20} = \frac{x}{x+18}$
$12x + 216 = 20x$
$216 = 8x$
$x = \frac{216}{8}$
$x = 27$

That means that the initial speed is of 27mph. Since we have the time and the speed, we can find the distance:

Average Speed = Total Distance Travelled / Time Interval

20 minutes = 0.33h

$27 = \frac{Distance}{0.33}$
$Distance = 27.0.33$
$Distance = 12.21 miles$

Hope I helped and good luck.

3 0

3 years ago

Read 2 more answers