3 years ago

What would happen to the variance of a data set if we multiplied every observation by S?

1 answer:

4 0

The variance of a constant is zero. Rule 2. Adding a constant value, c, to a random variable does not change the variance, because the expectation (mean) increases by the same amount. ... Multiplying a random variable by a constant increases the variance by the square of the constant.

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All of these pleaseeeeeeeeee

kenny6666 [7]

Solving Two- Step Equations:
First you have to add or subtract the number without the variable, x, then divide with the variable with x in it.

1.) -2 - 2=26
Answer: x= -14
Try some on your own, if you still need help comment back!

5 0

3 years ago

Use the graph of the exponential growth function f(x) = a(2x) to determine which statement is true. f(0) = 2 when a = . f(0) = 3

Genrish500 [490]

If the function is exponential, then (2x) is the exponent.

f(x) = a^(2x)

Take it from here.

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3 years ago

Read 2 more answers

How can i do this problem? "The athletic department raised $14,500 to buy new football uniforms. If each uniform costs $258, how

In-s [12.5K]

14,500/258 is 56.2015504 blah blah blah. You can't have a fifth of a uniform. I would interpret it as they have a little money left over, but they can't buy another uniform.

So your answer is 56 uniforms.

3 0

3 years ago

The area of a circle is 28.26 square miles. What is the circle's diameter?

DochEvi [55]

The diameter is 6. Explanation:

radius: 3.14r^2

28.26=3.14r^2

28.26/3.14=r^2

r^2=9

r=3

and we know that diameter is two times the radius so:

3*2=6

diameter equals 6.

if you want to check it plug back in:

3^2 * 3.14 = 28.26

hope this helped :)

3 0

2 years ago

Let R be the triangular region in the first quadrant with vertices at.Points (0,0), (h,0), and (h,r), where r and h are positive

Romashka [77]

Answer:

The answer is " $\pi \int^{h}_{0}(\frac{r}{h} x)^2 \ dx$ "