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3 years ago

Explain the dimensions of descriptive statistics in special education

1 answer:

5 0

Descriptive statistics mainly used for a group of people's numerical data such as percent, average , measures of test scores and number of hours working etc in a particular classroom setting. In this, ->variable(x) used for measurable characteristics. -> population(X) used for all subjects or objects. ->Parameter is used for measurable characteristics of a population. ->Sample used for a smaller group of subjects. -> Frequency graph used for picture depicting the number of times an event occurred. ->Bar graph used to mention the number of blocks or length representing the frequency of occurrence. ->Mean used to calculate intermediate value between several other numbers in a group. Using all or some of the above, reliability and validity measured.

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Which choice is equivalent to the expression below when y2 0? √y^2 + √16y^3 – 4y√y

DanielleElmas [232]

Answer:

Option C.

Step-by-step explanation:

We start with the expression:

$\sqrt{y^3} + \sqrt{16*y^3} - 4*y\sqrt{y}$

where y > 0. (this allow us to have y inside a square root, so we don't mess with complex numbers)

We want to find the equivalent expression to this one.

Here, we can do the next two simplifications:

$\sqrt{16*y^3} = \sqrt{16} \sqrt{y^3} = 4*\sqrt{y^3}$

And:

$y*\sqrt{y} = \sqrt{y^2} *\sqrt{y} = \sqrt{y^2*y} = \sqrt{y^3}$

If we apply these two to our initial expression, we can rewrite it as:

$\sqrt{y^3} + \sqrt{16*y^3} - 4*y\sqrt{y}$

$\sqrt{y^3} + 4*\sqrt{y^3} - 4\sqrt{y^3} = \sqrt{y^3}$

Here we can use the second simplification again, to rewrite:

$\sqrt{y^3} = y*\sqrt{y}$

So, concluding, we have:

$\sqrt{y^3} + \sqrt{16*y^3} - 4*y\sqrt{y} = y*\sqrt{y}$

Then the correct option is C.

8 0

3 years ago

John is looking for a job after graduation. The salary which is satisfied with must be $3000 with a tolerance of $500. Which of

Hunter-Best [27]

Answer:

the answer is a

Step-by-step explanation:

6 0

4 years ago

How do you do systems of two equations? Problem: y=-3x+4, y=3x-2

juin [17]

I assume you are trying to solve for each variable. if thats the case you want to use one equation to solve for y and then plug the y value into the next variable
Problem: y =-3x=4 so -3x+4=3x-2
x=1
plug x value into one of the equations
y=3(1)-2
y=1

8 0

3 years ago

The waiters poured 160 eight-ounce glasses of water at the banquet. How many gallons is this? Show your work.

larisa86 [58]

160 * 8 = 1280 ounces. 1280/64 = 20 half gallons 20*1/2= 10 So you have 20 half gallons or 10 gallons.

7 0

3 years ago

The graph shows the number of each kind of book in Hero's personal library. A book is

skelet666 [1.2K]

Answer:

$\displaystyle p=\frac{1}{15}$