0
Outliers are points that are surprising, or far from the rest of the points. Outliers highly influence the arithmetic mean. For instance, if you wanted to find the average height of American men and, just by chance, your sample included a guy who was 7 feet 6 inches tall, the mean would be high. A better choice here might be the median, or a trimmed mean.
Skewed data has a long tail on one side. That is, the values on one side of the mean are much farther from the mean than those on the other side. A familiar example is income. According to the Census Bureau, the mean household income in the United States in 2004 was $60,056. But while the lowest income is around $0 (which is $60,000 below the mean), the highest is well over $120,000 (which is $60,000 above the mean). Indeed, 1,699,000 households made more than $250,000. This is why income is usually reported as median, rather than mean.
Suppose you travel 120 miles and back. On the first part of your trip, you travel at 40 miles per hour. On the second part of your trip you travel at 60 mph. But the average rate is not the arithmetic mean (40 + 60)/2 = 50 miles per hour. The trip out takes three hours. The trip back takes two hours. So, you traveled 240 miles in five hours, for an average of 240/5, or 48 mph. Here you should use the harmonic mean.
This is similar to the previous problem, but it appears differently. When you average averages, the arithmetic mean is not right. For instance, suppose you want to find the average height of people in your college class. You find that the average height of women is 5 feet 4 inches and the average for men is 5 feet 10 inches. But, unless there are the same number of men and women, the overall average will not be 5 feet 7 inches.
What else can I help you with?
What are advantages and disadvantages of the system of patronage?
The system of patronage has very distinct advantages and disadvantages. The advantages are that you have a boss that looks after you and takes care of the problems and issues in everyday life. The disadvantages are that you are always commanded, patronized and have very little independence.
Advantages and disadvantages of expert power?
There are many advantages and disadvantages to expert power. One being, the power gets to their head. While it can be good by they know what they are talking about.
What are some advantages and disadvantages of an absolute government?
An absolute government helps provide a safety net for the economy. The disadvantages are that it controls everything in our lives, from our actions to our opinions.
What are the disadvantages of the confederate system?
CONFEDERte has least power
What are the disadvantages of martial law?
people don't have freedom
What is an arithmetic density?
An arithmetic density is a population density measured as the number of people per unit area of land.
What is the arithmetic density of Yemen?
The quantity of arithmetic cannot be measured and so the density is not defined.
Advantages and disadvantages of Arithmetic mean?
There are a great number of advantages and disadvantages of Arithmetic mean. One disadvantages is that it is not accurate.
Which country has the highest arithmetic density?
Monaco has the highest arithmetic density in the world. Its small size and high population contribute to this density.
How do you use arithmetic population density in a sentence?
The arithmetic population density of Phoenix, Arizona is 3119.94 per square mile.
Is physiologic population density of a country is always lower than the arithmetic density?
Not necessarily. Physiologic population density takes into account only habitable land, while arithmetic density considers total land area. So, in countries with large uninhabitable areas, physiologic density may be higher than arithmetic density.
What is the arithmetic density of Spain?
0.73%
What are the disadvantages of Huffman coding over arithmetic coding?
Kodam
What is the difference between arithmetic density and physiological density?
The arithmetic density of a population is the total number of people in proportion to the area of land (land size) The physiological density of a population is the total population in proportion to the area of arable land. Therefore, the arithmetic density of a population is always lower than the physiological density, since a land's arable portion can only be a subset of it's full size. Arithmetic = (Population/Full size) Physiological = (Population/Arable zones)
The physiologic population density of a country is always lower than the arithmetic density?
False.
Which county has the highest arithmetic density?
The Indian Subcontinent
What are the types of Population density?
The two main types of population density are arithmetic population density, which measures the number of people per unit of area, and physiological population density, which considers population density in relation to the amount of arable land available for agriculture in an area.
