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Vaselesa [24]
3 years ago
10

How do you find the variability of a sample?

Mathematics
2 answers:
k0ka [10]3 years ago
4 0

Answer:

Step 1: Calculate the mean (the average weight).

Step 2: Subtract the mean and square the result.

Step 3: Work out the average of those differences.

Step-by-step explanation:

Paladinen [302]3 years ago
3 0
Definition of Sample Variance
Step 1: Calculate the mean (the average weight).
Step 2: Subtract the mean and square the result.
Step 3: Work out the average of those differences
Info abt the formula: The variability of a data set as measured by the number R=xmax−xmin. The variability of sample data as measured by the number √Σ(x−ˉx)2n−1.
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Peter Schmidt ordered sandwiches and salads for a luncheon meeting. The sandwiches cost three times as much as a salads. The tot
evablogger [386]

EXPLANATION

Let's see the facts:

$Sandwiches= 3*$Salads

Bill = $24.92

We can represent this in an equation:

Total Bill = Sandwiches + Salads

Let's call to Sandwiches "x" to Salads "y" and to Bill "B"

Then, the equation will be:

B = x+y = (3*y) + y

Applying distributive property:

24.92 = 3y + y

Adding similar terms:

24.92 = 4y

Dividing both sides by 4:

6.23 = y

Switching:

y=6.23

As we know, y variable represent the salads cost, so:

Answer is $6.23.

3 0
1 year ago
In the right triangle ABC shown, c=17ft and angle A=30 degrees Determine side a
jekas [21]

Using relations in a right triangle, considering c as the hypotenuse, we have that the length of side A is: a = 8.5\sqrt{3}

<h3>What are the relations in a right triangle?</h3>

The relations in a right triangle are given as follows:

  • The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.
  • The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.
  • The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.

From the information given, we can build the following relation:

cos(A) = a/c.

\frac{\sqrt{3}}{2} = \frac{a}{17}

a = \frac{17\sqrt{3}}{2}

a = 8.5\sqrt{3}

More can be learned about relations in a right triangle at brainly.com/question/26396675

#SPJ1

6 0
1 year ago
Someone help me with this ASAP
Nesterboy [21]

Answer:

Mr. kelly can make 18 prices of wood that are exactly 1/3 of a foot.

from Monday to Wednesday it's a 7 degree F difference.

The temperature are 5 am is -3 degrees F

The order from coldest to warmest is -6, -3, 0, 1, 4

The sum is 60.50.

7 0
3 years ago
Read 2 more answers
-4x+8y=24 in slope intercept form
omeli [17]

Answer:

y=1/2x+3

Step-by-step explanation:

-4x+8y=24

Slope-intercept form: y=mx+b

Add -4x on each side

-4x+8y=24

+4x       +4x

8y=4x+24

Divide by 8 on each side

<u>8y</u>=<u>4x+24</u>

8        8

y=4/8x + 3

Simplify 4/8x

y=1/2x+3  

7 0
3 years ago
Solve for a<br> 1/4 (20 - 4a) = 6- a<br> G. No Solution<br> H. All Real Numbers<br> I. -6<br> J. -6
Margaret [11]

Answer:

THE EQUATION HAS NO SOLUTION!

Step-by-step explanation:

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4 0
3 years ago
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