Find the standard deviation of the data set shown. Round your answer to the nearest tenth.4,5,9,1,2,5

The standard deviation is about_________

Answers

Answer 1

Answer:

Mark Brainliest Please

Answer:

Answer is gicen in the image attached.

Step-by-step explanation:

Standard deviation (SD) measured the volatility or variability across a set of data. It is the measure of the spread of numbers in a data set from its mean value and can be represented using the sigma symbol (σ). The following algorithmic calculation tool makes it easy to quickly discover the mean, variance & SD of a data set.

For more help check Khan academy video

https://www.khanacademy.org/math/statistics-probability/displaying-describing-data/sample-standard-deviation/v/sample-standard-deviation-and-bias

Answer 2

Answer:

Answer:

2.6

Step-by-step explanation:

To calculate standard deviation:

(1) Find the mean - 4.33

4 + 5 + 9 + 1 + 2 + 5 = 26 26 / 6 = 4.333... ≈ 4.33

(2) Subtract the mean from each value and square each result

$(4 - 4.33)^2 = 0.1089$ $(5 - 4.33)^2 = 0.4489$ $(9 - 4.33)^2 = 21.8089$

$(1 - 4.33)^2 = 11.0889$ $(2 - 4.33)^2 = 5.4289$ $(5 - 4.33)^2 = 0.4489$

(3) Find a new mean with the new values from the previous step

0.1089 + 0.4489 + 21.8089 + 11.0889 + 5.4289 + 0.4489 = 39.3334

39.3334 / 6 = 6.555566667

(4) Take the square root of the new mean.

$\sqrt[]{x6.555566667} =2.560384086$

2.560384086 rounded to the nearest tenth is: 2.6

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-4 (5x - 1)+ -11 (2x + 4)
Out of 1,100 discs tested, 13 are defective. Estimate the number of defective discs in a batch of 41,000.

Multiply.
–8 ∙ 1.2
a. –96
b. –9.6
c. 9.6
d. 96

Answers

-8 * 1.2 = -9.6
first see if the the two numbers have the same signs or different signs, since this equation has different signs the answer will be negative.So now the last thing you have to do is multiply 8 by 1.2 which is 9.6 .now all you do is add the negative sign so now your answer is -9.6

-8•1.2=-9.6Awnser=B

Solve the following equation for x: 1,000(x – 2) = 75,000 A. 7 B. 770 C. 7,700 D. 77

Answers

1,000(x - 2) = 75,000 |divide both sides by 1,000

x - 2 = 75 |add 2 to both sides

x = 77

Plzzzz help me with this question ❓

Answers

Answer:

i think u should first givr her discount by doing 20/100×3500=700 and than he will get 5 percent profit than here

3500-700=2800

now for 5 % profit

5/100*2800=140

hence

20% discount=700

5% profit =140

it might be wrong but here u go

How do you find the mean? I'm an idiot right now.

Answers

Answer:

the mean is the average of all the numbers. first add up all numbers. then divide by how many numbers there are.

hope this helps

There are many cylinders with a height of 9inches. Let r represent the radius in inches and v represent the volume in cubic inches what belongs in cell A

Answers

Complete question :

There are many cylinders with a height of 9 inches. Let r represent the radius in inches and V represent the volume in cubic inches.

a. Complete the table relating the radius and volume of cylinders with height 9 inches. Write each volume as a multiple of , or round to the nearest cubic inch.

Answer:

A = 9π in³

B = 36π in³

C = 81π in³

Step-by-step explanation:

Radius, r = 1, 2, 3

Height of cylinder = 9

Volume, V of cylinder : πr²h

For, r = 1

V = π(1)²9 = 9π in³

For, r = 2

V = π(2)²9 = 4*9π in³ = 36π in³

For r = 3

V = π(3)²9 = 9*9π in³ = 81π in³

Point E is located at coordinates (-7, -5). Point F is located at the coordinates (-2, 7). What is the length of EF?A. 21 units
B. 17 units
C. 13 units
D. 15 units

Answers

The length EF is 13 units

The coordinates of the points are given as:

Point E = (-7,-5)

Point F = (-2,7)

The length EF is calculated using the following distance formula

$EF =√((x_2 - x_1)^2 + (y_2 -y_1)^2)$

This gives

$EF =√((-2+ 7)^2 + (7+5)^2)$

$EF =√(169)$

Evaluate the root of 169

$EF =13$

Hence, the length EF is 13 units

Find the standard deviation of the data set shown. Round your answer to the nearest tenth.4,5,9,1,2,5The standard deviation is about_________

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Find the standard deviation of the data set shown. Round your answer to the nearest tenth.4,5,9,1,2,5

The standard deviation is about_________