1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
denis-greek [22]
3 years ago
12

Compute the standard deviation of the following set of data to the nearest whole number: 8, 12, 15, 17, 18

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0
We have that

set of data [<span>8, 12, 15, 17, 18]

step 1
Find the mean
</span>[8+ 12 + 15 + 17 + 18]/5-------> 70/5------> 14

step 2
 for each number: subtract the Mean and square the result
(8-14)²----->36
(12-14)²----> 4
(15-14)²----> 1
(17-14)²----> 9
(18-14)²----> 16

step 3
<span> work out the mean of those squared differences
[36+4+1+9+16]/5-----> 66/5-----> 13.2----> </span><span>this value is called the "Variance"

step 4
</span><span>Take the square root of that
</span>standard desviation=√13.2-----> 3.63-------> 4

the answer is
4
You might be interested in
Point A, located at (-11,17) on the coordinate plane, is reflected over the x-axis to form point B. Then point B is reflected ov
zalisa [80]

Answer:

  B = (-11, -17)

  C = (11, -17)

Step-by-step explanation:

Reflection over the x-axis is accomplished by changing the sign of the y-coordinate:

  (x, y) ⇒ (x, -y) . . . . . reflection over x-axis

Reflection over the y-axis is accomplished by changing the sign of the x-coordinate:

  (x, y) ⇒ (-x, y) . . . . . reflection over the y-axis

__

  B = (-11, -17)

  C = (11, -17)

__

<em>Check</em>

Reflection over both axes negates both coordinates. It is equivalent to reflection over the origin, or rotation 180°.

  A(-11, 17) ⇒ C(11, -17) . . . . . both coordinates change sign

3 0
3 years ago
Please answer this ??
soldi70 [24.7K]

Answer:

A: predictions

Step-by-step explanation:

You should add the other ones

8 0
3 years ago
Read 2 more answers
26. The two triangles below are similar. What<br> is the perimeter of triangle XYZ?
AveGali [126]

Answer:

24

Step-by-step explanation:

6 ÷ 15 = 0.4

X to Y = 20 × 0.4 = 8

Y to Z = 25 × 0.4 = 10

Perimeter: a + b + c

6 + 8 + 10 = 24

Even I am surprised by what I wrote. Hopefully, it is right and helps you ^-^ Please comment if you have any questions.

-Tay did this

4 0
3 years ago
Differenciate by first principles f(x) = 4x²-4x-3
zysi [14]
f(x) = 4x^2-4x-3\\&#10;f'(x)=\lim_{h\to0}\frac{f(x+h)-f(x)}{h}\\&#10;f'(x)=\lim_{h\to0}\frac{4(x+h)^2-4(x+h)-3-(4x^2-4x-3)}{h}\\&#10;f'(x)=\lim_{h\to0}\frac{4(x^2+2hx+h^2)-4x-4h-3-4x^2+4x+3}{h}\\&#10;f'(x)=\lim_{h\to0}\frac{4x^2+8hx+4h^2-4h-4x^2}{h}\\&#10;f'(x)=\lim_{h\to0}\frac{8hx+4h^2-4h}{h}\\&#10;f'(x)=\lim_{h\to0}{8x+4h-4}\\&#10;f'(x)=8x+4\cdot0-4\\&#10;f'(x)=8x-4\\
3 0
4 years ago
Read 2 more answers
Plz answer this questioned
adelina 88 [10]
A) Law of Detachment...
3 0
4 years ago
Other questions:
  • Round 12,909 to the nearest ten
    8·2 answers
  • Fractions between 1/3 and 1/4
    15·1 answer
  • Evaluate −4x+3y when x=3/5 and y=7/10. Write your answer as a fraction in simplest form.
    15·1 answer
  • The graph shows a proportional relationship between a person's total savings in dollars and the number of weeks they have been s
    11·2 answers
  • Which of these expressions are equivalent to −5+(2.5+315)⋅4.25 ? Choose the TWO correct answers.
    15·1 answer
  • Consider △XYZ in the figure below.
    14·1 answer
  • What do we call the statement that determines if the null hypothesis is rejected?
    13·2 answers
  • I need help with this problem​
    6·2 answers
  • I would like to know what part of the ax+bx=c standard equation means in a graph
    8·1 answer
  • PLEASE HELPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!