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
Nat2105 [25]
3 years ago
14

For the Data Set below, calculate the Variance to the nearest hundredth decimal place. (Do not use a coma in your answer) 175 34

9 234 512 638 549 500 611
Mathematics
1 answer:
dlinn [17]3 years ago
4 0

Answer:

The variance of the data is 29966.3.

Step-by-step explanation:

The given data set is

175, 349, 234, 512, 638, 549, 500, 611

We need to find the variance to the nearest hundredth decimal place.

Mean of the data

Mean=\dfrac{\sum x}{n}

where, n is number of observation.

Mean=\dfrac{3568}{8}=446

The mean of the data is 446.

Variance=\dfrac{\sum (x-mean)^2}{n-1}

Variance=\dfrac{(175-446)^2+(349-446)^2+(234-446)^2+(512-446)^2+(638-446)^2+(549-446)^2+(500-446)^2+(611-446)^2}{8-1}

Variance=\dfrac{209764}{7}

Variance=29966.2857

Variance\approx 29966.3

Therefore, the variance of the data is 29966.3.

You might be interested in
Find the difference in the given lengths of the polygons . (7x + 2) units (6x - 5) units .
Tom [10]

Answer:

Difference in the lengths of the polygons is (x + 7) units.

Step-by-step explanation:

Lengths of the given polygon = (7x + 2) units and (6x - 5) units

Therefore, difference in the given lengths = (7x + 2) - (6x - 5)

                                                                      = (7x - 6x) + (2 + 5)

                                                                      = x + 7

Therefore, difference in the lengths of the polygons is (x + 7) units.

7 0
3 years ago
3 l = _____ dl<br><br> A. 0.3<br> B. 0.03<br> C. 300<br> D. 30
Andru [333]

Answer: The correct option is D, i.e.,30.

Explanation:

It the given equation we have two units l and dl.

Where l represents the liter and dl represents the deciliter. These are the volume units.

We know that,

1 liter = 10 deciliter

It means,

1 l = 10 dl

Multiply both sides by 3,

1\times 3 l = 10\times 3 dl

3 l = 30 dl

Therefore, the correct option is D and 3 l = 30 dl.

6 0
3 years ago
To make 2 batches of nut bars, Jayda needs to use 4 eggs. How many eggs are used in each batch
Maru [420]
There would be 2 eggs used in each batch
3 0
3 years ago
Read 2 more answers
6.) the following function represents the profit P(n) in dollars that a concert promoter makes by selling tickets for n dollars
marissa [1.9K]
For Part A, what to do first is to equate the given equation to zero in order to find your x intercepts (zeroes)

0=-250n^2+3,250n-9,000 after factoring out, we get

-250(n-4)(n-9) and these are your zero values.

For Part B, you need to square the function from the general equation Ax^2+Bx+C=0. So to do that, we use the equated form of the equation 0=-250n^2+3,250n-9,000 and in order to have a positive value of 250n^2, we divide both sides by -1

250n^2-3,250n+9,000=0

to simplify, we divide it by 250 to get n^2-13n+36=0 or n^2-13n = -36 (this form is easier in order to complete the square, ax^2+bx=c)

in squaring, we need to apply <span><span><span>(<span>b/2</span>)^2 to both sides where our b is -13 so,
(-13/2)^2 is 169/4

so the equation now becomes n^2-13n+169/4 = 25/4 or to simplify, we apply the concept of a perfect square binomial, so the equation turns out like this 

(n-13/2)^2 = 25/4 then to find the value of n, we apply the square root to both sides to obtain n-13/2 = 5/2 and n is 9. This gives us the confirmation from Part A. 

For Part C, since the function is a binomial so the graph is a parabola. The axis of symmetry would be x=5.

</span></span></span>
7 0
3 years ago
Help Me please
Novay_Z [31]
Multiply her answer by -6 and see if the result is -108
4 0
3 years ago
Read 2 more answers
Other questions:
  • How do you simplify (1/2)^4
    9·2 answers
  • A pendulum is set swinging. its first oscillation is through 30 and each succeeding oscillation is through 95% of the angle of t
    12·1 answer
  • Which is the equation for the graph of the limacon curve below? [- 5, 5] by [- 5, 5) r=3-2sin theta r=2-3 sin theta r=2-2 sin th
    12·2 answers
  • You should multiply by 4 before adding 16 to solve the inequality 11 &gt; - 16.<br><br> True False
    12·1 answer
  • What is the slope of the line represented by this equation -3x+8y=12
    13·1 answer
  • Draw a diagram to represent the problem. Then solve.
    10·1 answer
  • A=72 and c=75 solve b
    5·1 answer
  • Brenda is cooking couscous. The recipe says she requires 480 grams of couscous for 4 people. How many will she need for 14?
    15·1 answer
  • Find the area of the figure with Heron’s formula
    7·1 answer
  • 6th grade math help me pleaseee
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!