Describe weighted average

Answers

Answer 1

Answer:

Explained below

Explanation:

In simple average, we just add all the given data variables and divide it by the number of data given.

However, when it comes to weighted average, what we do is that we multiply each given variable by their weights and then divide the sum of that by the sum of the weights.

Thus, if the variables are denoted by x and their weights are denoted by y, then we have;

Weighted average = Σ(xy)/Σy

Related Questions

A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67oC?

A.
1.4

B.
1.0

C.
0.2

D.
5.0

E.
6.7

Answers

Answer:

6.7

hope it help

what is the most appropriate unit to measure the following; the length of a football field. b) the diameter of a tennis ball

Answers

Explanation:

a) m (metre)

b) mm (millimeter)

How much heat is added if .0948g of water is increased in temperature by .728 degrees C?

.289 J

.803 J

1.46 J

.055 J

Answers

Answer:

0.289J of heat are added

Explanation:

We can relate the change in heat of a substance with its increasing in temperature using the equation:

q = m*ΔT*S

Where Q is change in heat

m is mass of substance (In this case, 0.0948g of water)

ΔT = 0.728°C

S is specific heat (For water, 4.184J/g°C)

Replacing:

q = 0.0948g*0.728°C*4.184J/g°C

q = 0.289J of heat are added

PLZ HELP ME WITH MY WORK
What is a compound?
A substance that is made from two different metals
B. A substance that cannot be broken into simpler substances
C. A substance that is made using a chemical reaction
D. A substance that can be separated by physical means

Answers

Answer:

Explanation:

Answer A is incorrect because a compound doesn't have to be made with only metals.

Answer B is incorrect because that is actually the definition of a pure element.

Answer C is correct because to make a compound, there has to be a chemical reaction where bonds are formed and an entirely new substance is created.

Answer D is incorrect because compounds cannot be separated by physical means.

Hope this helps :D

PLZ HELP ME Which of the following is the process by which chloroplasts use carbon dioxide, water, and sunlight to produce sugars and oxygen?
A. Photosynthesis
B. Cellular respiration
c. Reproduction
D. Homeostasis

Answers

Answer:

Explanation:

The answer is Photosynthesis

Write the relation of M3 with its multiples

Answers

Explanation:

HI friends good morning

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. What is the solvent in the saline solution?

A. Bag
B. Patient
C. Saline
D. Water

Answers

D. Water

The solvent is the liquid that the solute (salt) is dissolved in.

Water is the solvent in the saline solution. Hence, option D is correct.

What is the solute?

A solute is something being dissolved, a solvent is a thing dissolving the item, and the solution is the mixture of the two items.

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. Water is the solvent in the saline solution.

Hence, option D is correct.

Learn more about the solution here:

https://brainly.com/question/7932885

#SPJ5

The number of joules required to heat one gram of a substance one degree Celsius is _____.

endothermic

temperature

exothermic

specific heat capacity

Answers

The answer is D - specific heat capacity.

Other Questions

A game involves correctly choosing the 5 correct numbers from 1 through 18 that are randomly drawn. What is the probability that a person wins the game, if they enter a) once? b) 7 times with a different choice each time? Children depend on adult to help develop their self conscious emotions McKean Corporation authorized 500,000 shares of common stock in its articles of incorporation. On May 1, 2019, 100,000 shares were sold to the company's founders. However, on October 15, 2019, McKean repurchased 20,000 shares to settle a dispute among the founders. At this date, how many shares were issued and outstanding, respectively? A capark has 34 rows and each row can acommodate 40 cars. If there are 976 cars parked, how many cars can still be parked? what type of change can't be called development Which of the following would be examples of abiotic factors in a mountain river ecosystem? fish, algae, and sandsand, water, and fishsand, water, and mineralswater, fish, and algae Help anyone can help me do the question,I will mark brainlest. A person walks away from a pulley pulling a rope slung over it. The rope is being held at a height 10 feet below the pulley. Suppose that the weight at the opposite end of the rope is rising at 4 feet per second. At what rate is the person walking when s/he is 20 feet from being directly under the pulley What is the Constant of which bait works best for a fly trap? 20) solve: [tex] {8}^{2} + 2 = [/tex]21) solve: [tex]4(2x + 5y = [/tex]22) simplify the expression [tex]4( {2}^{2} + 30) - 4 = [/tex] Match the answers.. O domnio da metrpole portuguesa sobre sua colnia na Amrica submeteu os colonos a condies impostas que, na maioria das vezes, oportunizaram apenas os interesses de Portugal. A explorao excessiva que era realizada por Portugal teve seus reflexos de descontentamento a partir do final do sculo XVII. Neste, ocorreu apenas um movimento de revolta, mas foi ao longo do sculo XVIII que os casos se multiplicaram. Entre os principais movimentos nativistas podemos destacar a Revolta dos Beckman, a Guerra dos Mascates, a Guerra dos Emboabas e a Revolta de Filipe dos Santos. Sobre essas revoltas, pesquise em diferentes fontes e preencha o quadro abaixo com as informaes solicitadas. Which statement describes the motion of the sun? The sun rotates more slowly at its equator. The sun rotates faster at its equator. The sun rotates faster at its poles. The sun does not rotate at its poles. What were Seneca's influences on Shakespeare A box contains a yellow ball, an orange ball, a green ball, and a blue ball. Billy randomly selects 4 balls from the box (with replacement). What is the expected value for the number of distinct colored balls Billy will select? Which of these Fair Deal reforms did not happer?O A. A higher minimum wageB. Providing more social security benefitsO c. Public housing for the poorO D. A national health insurance program Mention the structure of the federal system of government of Nepal NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!!Chapter 11 part 2:What are three different properties of logarithmic functions when encountering the operations of addition, subtraction, and multiplication? Provide an example of each. Find a 2-digit number smaller than 50, the sum of whose digits does not change after being multiplied by a number greater than 1 . Do you feel pressure to have your body look a certain way to others? How does it make you feel when you others are judged because of your their body type?What do you think the media's role is in how individuals view body image?If you could describe the perfect body type, what do you believe it would be?What types of things have you seen others attempt to do to their bodies to try and make them look or appear a certain way?If you could, what would you tell younger boys girls about body image? 5 sentences (right answer only please) thank you:)