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mylen [45]
2 years ago
13

What is formula for Standard Deviation (σ)

Mathematics
2 answers:
Phoenix [80]2 years ago
7 0

Answer:

sd =  \sqrt{ \frac{ fx {}^{2} }{f} - ( \frac{fx}{f}) {}^{2}   }

Scrat [10]2 years ago
7 0

Answer:

What is formula for Standard Deviation (σ)

In Individual series

☙\huge \mathfrak{\pink{ \fbox{ \green{S.D}}}}

Step-by-step explanation:

<h2> formula of Standard Deviation </h2>
<h3>[ σ= nx²−( nx ²) / n ]</h3>

hope it's helpful thanks

<h3> </h3>

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2 years ago
The solution of this equation has an error. Which of the following steps has an error
Vanyuwa [196]

Answer:

step 2

Step-by-step explanation:

step 1 is good: -5x + 8 = 7

step 2 (error): meant to subtract 8 on both sides

-5x = 7 - 8

-5x = -1

step 3 : divide -5 on both sides

x = -1 / -5

x = 1/5

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2 years ago
A town planner creates plans for a new water tower. The tower is 96 feet tall and the tank is circular with a diameter of 64 fee
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3 years ago
The length of the arc of one quadrant is equivalent to theâ _____ of a 90 degrees bend.
Ira Lisetskai [31]

Answer:

Developed Length

Step-by-step explanation:

A developed length is the length along the centre line of a circular shape.

From the question, the degree of bend is 90°

Also, from the question; the length of an arc of 1 quadrant.

1 quadrant = 90°

And the degree of bend = 90° (from the question)

So, it's safe to say 1 quadrant = the degree of bend = 90°

A small change in 90° will move change the quadrant to another quadrant.

So, at exactly 90° (or other multiples of 90° which are 180°, 270° and 360°), it is at its developed length.

8 0
3 years ago
The New England patriots scored 9 points in the first half. In the second half they scored 3 less than 2 times the points in the
Rom4ik [11]

Answer:

S : T = 5 : 8

Step-by-step explanation:

Represent the first half with F and the second with S

We have that:

F = 9 --- From the first statement

S = 2F - 3 --- From the next statement

Required

Determine the ratio of S to the total point

First, we need to determine the value of S

Substitute 9 for F in S = 2F - 3

S = 2 * 9 - 3

S = 18 - 3

S = 15

Next, we determine the total points

Total =  F + S

Total =  9 + 15

Total =  24

The ratio of S to total is: (Represent total with T)

S : T = 15 : 24

Divide both ration by 3

S : T = 15/3 : 24/3

S : T = 5 : 8

<em>Hence, the ratio is 5 to 8</em>

4 0
2 years ago
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