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steposvetlana [31]
3 years ago
11

The​ _______ represents the number of standard deviations an observation is from the mean.

Mathematics
1 answer:
Korvikt [17]3 years ago
7 0

Answer:

The <u>z-score</u> represents the number of standard deviations an observation is from the mean.

Step-by-step explanation:

We want to complete the statement:

The _______ represents the number of standard deviations an observation is from the mean.

Whenever we calculate z- scores, we are finding how many standard deviations an observation is from the mean.

A z-score of 3, means an observation is 3 standard deviation above the mean.

Therefore the best complete is:

<u>z-score.</u>

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answer:

25-7=n. n = 18

Step-by-step explanation:

...

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3 years ago
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What is the formula
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6 0
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8 0
3 years ago
Find average rate of change f(x)=-4x^(2)-3x-4 ; [-1,3]
NeTakaya

The rate of change of the given function at [-1,3] is 5

Further explanation:

Given function is:

f(x) = 4x^2-3x-4

And the interval is:

[-1,3]

In order to find the rate of chnage of function the given function's value is calculated at both points and divided by their difference

The formula is:

Rate\ of\ change= \frac{f(x_2)-f(x_1)}{x_2-x_1}

Here,

x_1 = -1

x_2 = 3

So,

f(-1) = 4(-1)^2-3(-1)-4\\=4(1) +3-4\\=4-1\\=3\\f(3) = 4(3)^2-3(3)-4\\= 4(9)-9-4\\=36-13\\=23

Putting the values in the rate of change formula:

Rate\ of\ change= \frac{23-3}{3-(-1)}\\= \frac{23-3}{3+1}\\=\frac{20}{4} \\=5

The rate of change of the given function at [-1,3] is 5

Keywords: Rate of change, functions

Learn more about functions:

  • brainly.com/question/3225044
  • brainly.com/question/3568205

#LearnwithBrainly

5 0
3 years ago
A tank can be filled by one pipe in four hours and by a second pipe in six hours; and when it is full, the tank can be drained b
just olya [345]
12 hours..........
+ - = 1
Multiply by 12 to clear the fractions
3t + 2t - 4t = 12
t = 12 hrs to fill the pool
3 0
3 years ago
Read 2 more answers
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