Which data set has the largest standard deviation?
A. 20, 21, 23, 19, 19, 20, 20
OB. 1.6,3, 15, 4, 12, 8
O C. 3.4.3.4.3.4.3
O D. 12. 14, 13, 14, 12, 13, 12
Answers
Answer: B
Explanation:
Given the following data :
A. 20, 21, 23, 19, 19, 20, 20
B. 1, 6,3, 15, 4, 12, 8
C. 3.4.3.4.3.4.3
D. 12. 14, 13, 14, 12, 13, 12
Standard deviation = √[Σ(x - μ) / n]
Where x = scores, μ = mean value of the scores or data, n = number of values in the data.
And mean(μ) = Σx / n
Using the online standard deviation calculator :
For data A: 20, 21, 23, 19, 19, 20, 20
σ = 1.2777531299999
For data B : 1, 6,3, 15, 4, 12, 8
σ = 4.6598589800857
For data C: 3,4, 3, 4, 3, 4, 3
σ = 0.49487165930539
For data D: 12, 14, 13, 14, 12, 13, 12
σ = 0.83299312783504
Therefore data B has the largest standard deviation.
Related Questions
An area with many volcanoes that includes the western borders of South, Central, and North America, the southern border of Alaska, and the eastern border of Japan is often called the Ring of Fire. Why did so many volcanoes form in these areas?
help
science
Answers
Hope this helps! :)
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Two solid marbles A and B with a mass of 3.00 kg and 6.50 kg respectively have an elastic collision in one dimension. Before collision solid marble A (3.00 kg) was at rest and the other solid marble (6.50 kg) had a speed of 3.50 m/s. Calculate the magnitudes of velocities of two solid marbles vA and vB after collision.
Answers
Answer:
va = 4.79 m/s
vb = 1.29 m/s
Explanation:
Momentum is conserved:
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(3.00) (0) + (6.50) (3.50) = (3.00) v₁ + (6.50) v₂
22.75 = 3v₁ + 6.5v₂
For an elastic collision, kinetic energy is conserved.
½ m₁u₁² + ½ m₂u₂² = ½ m₁v₁² + ½ m₂v₂²
m₁u₁² + m₂u₂² = m₁v₁² + m₂v₂²
(3.00) (0)² + (6.50) (3.50)² = (3.00) v₁² + (6.50) v₂²
79.625 = 3v₁² + 6.5v₂²
Two equations, two variables. Solve with substitution:
22.75 = 3v₁ + 6.5v₂
22.75 − 3v₁ = 6.5v₂
v₂ = (22.75 − 3v₁) / 6.5
79.625 = 3v₁² + 6.5v₂²
79.625 = 3v₁² + 6.5 ((22.75 − 3v₁) / 6.5)²
79.625 = 3v₁² + (22.75 − 3v₁)² / 6.5
517.5625 = 19.5v₁² + (22.75 − 3v₁)²
517.5625 = 19.5v₁² + 517.5625 − 136.5v₁ + 9v₁²
0 = 28.5v₁² − 136.5v₁
0 = v₁ (28.5v₁ − 136.5)
v₁ = 0 or 4.79
We know v₁ isn't 0, so v₁ = 4.79 m/s.
Solving for v₂:
v₂ = (22.75 − 3v₁) / 6.5
v₂ = 1.29 m/s
help pleas!!!!
The food coloring spread _______ in the hot water. *
Faster
Slower
Answers
Faster
Explanation:
The food coloring travels through hot water better due to the molecules having better energy and move faster than cold water molecules.
The picture is attached.
A student poured 500 mL of milk into one flask and 500 mL of water into another flask.
Which of the following conclusions can the student make about the physical properties
of these two liquids just by looking at the flasks?
A: The density of milk is greater than that of water.
B: Milk has a greater mass than water.
C: Milk and water are soluble fluids.
D: Milk and water have the same shape.
Answers
Answer:
C
Explanation:
There are two groups of waves with the same amplitude. One contains waves of short wavelength and the other has waves of long wave-length, Which waves have the most energy?
Answers
short wavelength
Explanation:- wavelength is directly proportional to frequency short wavelength have higher frequency & long wavelength have lower frequency a higher frequency wave have more energy than a lower frequency wave with same amplitudeI HOPE THAT THIS ANSWER HELPS YOUPlease can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
For the motion of a falling object, which graphs are straight lines? *
Acceleration versus time only
Displacement versus time only
O Displacement versus time and acceleration versus time
O Velocity versus time and acceleration versus time
Answers
Answer:
Displacement versus time and acceleration versus time
The graphs which shows the straight line for the motion of a falling object are velocity versus time and acceleration versus time.
What is a position-time graph?The position-time graph shows the change in position of the moving object over the timescale.
Displacement-time graph-The displacement-time graph shows the position of the moving object over the timescale. This graph tell that how far the object is from its initial position over the timescale. Velocity-time graph-The velocity-time graph shows the speed of the moving object over the timescale. Acceleration-time graph-The velocity-time graph shows the change in speed of the moving object over the timescale.In the image attached below, the graph is plotted for the Displacement-time graph (A), Velocity-time graph (B), and Acceleration-time graph (C).
In this three graph only velocity and acceleration shows the straight lines for the motion of falling object.
Hence, the graphs which shows the straight line for the motion of a falling object are velocity versus time and acceleration versus time.
Learn more about the position-time graph here;
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A person is pulled to the right on a sled (total mass of 52.9 kg) across the surface of a frozen pond with a force of 67.7 Newtons so that they move with a constant velocity. What is the force of friction acting on the sled?
Answers
Answer:
67.7 N
Explanation:
Draw a free body diagram of the person on the sled. There are four forces:
67.7 N to the right,
friction force to the left,
weight force down,
and normal force up.
Constant velocity means 0 acceleration.
Sum of the forces in the x direction:
∑F = ma
67.7 N − F = 0
F = 67.7 N
what are the differences between the two forms of constructive forces: weathering and erosion?
Answers
Answer:
Constructive forces cause landforms to grow.
Destructive forces wear landforms down. The slow processes of mechanical and chemical weathering and erosion work over time to change once high mountains into smooth flat plateaus.Explanation:
Vector A→ has a magnitude of 8 units and makes an angle of 45° with the positive x-axis. Vector B→ also has a magnitude of 8 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A→ + B→ and (b) the vector difference A→ - B→
Answers
Answer:A + B = 6,123 units at angle 112,5 degrees.
A - B = 14,782 units at angle 22,5 degrees.
Explanation:
Answer:A + B = 6,123 units at angle 112,5 degrees.
A - B = 14,782 units at angle 22,5 degrees.
Phycics math dah
Explanation:
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
i have a question. If space stands still and earth moves, why do people float and move around in space and how do the planets, stars, nebulae,etc. not move?
Answers
Students are testing the ability of a device to prevent the transfer of thermal energy. They conduct the test by placing a container of heated water inside the container. The most useful data for testing the ability of the device to prevent the flow of energy would be which of the following?
A. The density, in grams per cubic centimeter, or the materials used to build the device.
B. The volume, in cubic centimeters, of empty space inside the container
C. The volume, in milliliters, of hot water in the container placed inside the device
D. The change in the temperature, in degrees Celsius, of the water over one hour
Answers
Answer:
D.
Explanation:
Answer:
i think its D?
Explanation:
im not sure though
100 POINTS AND BRAINLIEST NO CAP IF YOU WRITE THIS CORRECTLY AND DECENTLY IF YOU HAVE A QUESTION PUT IT IN THE COMMENTS NOT AN ANSWER PLS
You have learned that power is the speed, or rate of doing work. In this report you will learn more about James Watt or horsepower.
Here is your goal for this assignment:
Complete an activity on power
Complete one of these activities:
1. Research the life of James Watt. Report in about fifty words some of the important events in Watt's life leading up to the watt being named in his honor.
2. Conduct a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer. Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
Answers
Power is the rate at which work is done. James Watt is a famous engineer and inventor who developed the steam engine.
Who is James Watt?He improved the efficiency of the engine by adding a separate condenser, which reduced the amount of fuel needed. In his honor, the watt was named after him as the unit of power.
For the activity, here is a suggestion; conducting a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer.
Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
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Discuss one component of your school's recycling system that could be automated and predict the economic impact.
Answers
One component of my school's recycling system that could be automated is the sorting of recyclables. Currently, the school relies on students and staff to sort recyclables into the appropriate bins, which can be time-consuming and may result in contamination if materials are not sorted properly.
Automating the sorting process with a machine or conveyor belt system could improve the efficiency and accuracy of the recycling system. It could also potentially reduce labor costs associated with manual sorting.
The economic impact of automating the sorting process would depend on the initial cost of the equipment and any associated installation or maintenance costs. However, over time, the improved efficiency and accuracy of the system could result in cost savings for the school. Additionally, the increased efficiency of the system could potentially lead to increased recycling rates, which could result in cost savings for waste disposal and potentially generate revenue through the sale of recycled materials.
Answer:
Our school has color coded virtual trash cans. For example, a trash can for only paper will only accept paper items, if the item put inside is not paper, it will litter it out and all students have cleaning duties throughout the week so even if you or someone litters you’ll probably have to clean it up at some point anyways. I honestly think it’s very cool. (i wish this was true smh).
Effieciency of a machine is never 100%
Answers
Answer:
in real life yes it's true because of energy lost in another way that we do not want. like car engine lost some energy as heat. So the energy from gasoline can't converted 100% to move the tire. Maybe it only 40-60 % energy use for move and the rest lost as heat and other
but sometime it can be 100% of efficiency on physics text book so that we can learn physics in the easiest way.
Answer the question in the picture make your response simple but to where it gives a full answer! I need a response ASAP!
Answers
Answer: A river delta is a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs when a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment. The size and shape of a delta is controlled by the balance between watershed processes that supply sediment.
Savion listed the steps involved when nuclear power plants generate electricity.
Nuclear reaction occurs.
Nuclear energy is converted to radiant and thermal energy.
Heat is used to generate steam.
Light and heat are released.
Steam turns turbines.
Mechanical energy is converted to electrical energy.
Which best explains how to correct Savion’s error?
Answers
Explanation:
Which best explains how to correct Savion's error? In step 2, change “radiant and thermal ” to “chemical and mechanical.”
what is the bets console
Answers
True or False. The more energy put into making a sound the lower its intensity.
Answers
Answer:
false
Explanation:
took the quiz, trust
In this longitudinal wave, label the arrow that shows the direction the wave travels with a T. Label the arrow that shows how the spring is disturbed with a D.
please help
Answers
Which options identify functions that cells carry out to support life?
(Select all that apply.)
1. avoid burning food molecules to save energy
2. remove waste materials
3. fight foreign cells or harmful molecules
4. burn food molecules to produce energy
Answers
Soil classification is partially determined by the presence of organic material, such as humus. Which would have more humus—a desert or a forest—and why? Check all that apply.
a forest because it has more trees to provide plant litter
a desert because it has soil with a larger particle size
a forest because it has more animals to mix the soil
a forest because the trees prevent rain from reaching the soil
a desert because the dry air decomposes plant litter
Answers
a desert because it has soil with a larger particle size. Hence option B is correct. Hence option B is correct.
What is Dessert ?Dessert is the final course of a meal. The dish includes sweet snacks like sweets and sometimes a beverage like dessert wine or liqueur. There is no tradition of a dessert course to finish a dinner in several regions of the world, such as Greece and West Africa, and in most parts of China.
Desserts include biscuits, cakes, cookies, custards, gelatins, ice creams, pastries, pies, puddings, macaroons, sweet soups, tarts, and fruit salad. Fruit is also typically seen in dessert courses due to its inherent sweetness. Desserts are made in certain cultures by sweetening savoury dishes. In the 18th and 19th centuries, when refined sugar and wheat were widely available and ostentation and artifice were desired, the dessert course achieved its pinnacle in the feasts of the European courts. Numerous creams, tarts, fruits, cakes, pastries, puddings, jellies, and meringues were given on tables decorated with flowers and architectural fancies made of sugar and pastry.
Hence option B is correct.
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Answer: The answers are a & c.
Explanation: I just did it
How can removing thermal energy afect the state of matter? (Check all that apply)
a). When thermal energy is removed from water vapor the temperature decreases and condensation can occur.
b).When thermal energy is removed from a liquid the particles slow down and a water vapor is formed.
c). When thermal energy is removed from a liquid the temperature decreases, the particles slow down, and freezing occurs forming a solid.
d). When thermal energy is removed from water vapor the particles slow down and evaporation occurs.
Answers
For each of the following four topics, write a paragraph answering the questions below each topic. This exercise should help you decide which topic on which you would prefer to write.
1.Compare and contrast a sport that is played in two different parts of the world. Describe how differently it is played in the two regions, and the impact it has on the two societies.
a. What interests you about this topic?
b. What sport and regions do you think you would choose and why?
c. How would you go about getting information on this topic?
Answers
Being interested in a certain topic wants to study (or emerge as concerned with) that subject matter for its personal sake.
Describe how differently it is played in the two regions.dual sports activities are performed by two human beings opposing every different, while crew sports contain prepared companies of people competing in opposition to every different.twin sports are performed through two people opposing every different, while team sports activities involve organized businesses of humans competing with every other.Many sports activities rely on desires, which might be points scored in soccer, lacrosse, and floor hockey, whilst other sports activities depend upon points with a landing, runs, or falls.Learn more about team sports here:-
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Please Help! Brainliest For Correct Answers!
Answers
Answer:
Liquid: A
Plasma: D
Solid: B
Gas: C
Plasma- A
Solid- B
Gas- C
(Please help!) The diagram shows a roller-coaster track. Assume that the system is closed. At point B, the roller-coaster car is at the highest point of the ride. Which chart best shows the relative amounts of potential and kinetic energy of a roller-coaster car that has stopped briefly at point B before heading down the other side of the hill?
Answers
In this case, Kinetic energy is based solely on the movement of the object. As the question indicated that at the point in question the object is stopped, there would be no kinetic energy at that point, only potential energy.
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
What is a Box Camera
Answers
A box camera is a simple type of camera, the most common form being a cardboard or plastic box with a lens in one end and film at the other. They were sold in large numbers during the late 19th and early 20th centuries. The lenses are often single element designs meniscus fixed focus lens, or in better quality box cameras a doublet lens with minimal (if any) possible adjustments to the aperture or shutter speeds. Because of the inability to adjust focus, the small lens aperture and the low sensitivity of the sensitive materials available, these cameras work best in brightly lit day-lit scenes when the subject is within the hyperfocal distance for the lens and of subjects that move little during the exposure. Eventually, box cameras with photographic flash, shutter and aperture adjustment were introduced, allowing indoor photos.
Learn more about Pinhole Cameras
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1) Advantages of Pinhole Cameras https://brainly.in/question/2724158
2) Is working of camera is similar to that of pin hole camera?brainly.in/question/14388967?referrer=searchResults
3) Uses of pin hole camera?
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Hope my answer helps you ✌️
Mark BRAINLIEST
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Answer:
a simple box-shaped hand camera, typically lacking an adjustment for shutter speed.