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Advantages and disadvantages of descriptive and inferential statistics
Advantages and disadvantages of descriptive statistics
Advantages and disadvantages of descriptive and inferential statistics
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Summary
Currently, our world is very connected and we seem to become more and more dependent on the transportation we use to get us to and from the places we need to go. With this increased dependency, fuel economy should be going up rapidly to keep the dangerous greenhouse gas emissions at steady levels instead of letting it exponentially increase. Reducing fuel consumption is something that automakers are currently working on to help out the environment. Automakers are looking into the past to understand what made fuel economy so great, and are combining those ideas with descriptive and inferential statistics to generate new ideas to help with modern eco-friendly passenger vehicles. Currently, automakers are using descriptive statistics from
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We generally see this method used for financial and marketing purpose. When conducting surveys, we normally wouldn’t use descriptive statistics because it generally needs a huge population because it doesn’t infer any trends, it describes trends. Where as in inferential statistics we can use a sample population and assume that the sample is representative of the population to infer trends of the population to help with the sheer cost of understanding a population. Inferential statistics are generally used for understanding overall trends in a population neglecting all sublime factors, which is typically best for customer satisfaction and product …show more content…
One way these businesses seek to do this, is the collection of quantitative data and various sampling methods as a way to help find intuitive ways to solve the problems they have, or to make what they better. There are several ways to collect meaningful data, using both descriptive and inferential statistical methods. For example, in a business setting descriptive statistics can show an increasing trend in profits, however if you look at the inferential statistics of customer satisfaction surveys we may see a decline. This would lead you to say, profits are going to decrease unless a solution is made
Increasing environmental awareness, coupled with a responsible American government and improved technology, have all contributed to the comeback of low-and zero-emissions vehicles in the US. It remains to be seen whether the automakers and oil companies will once again work to halt this progress, or embrace it as the technology of a more responsible future.
Automobiles play an essential role in American society. As if being the major means of transportation was not impressive enough, automotives can be seen on T.V., in movies, in magazines, and can sometimes be indicative of a person’s wealth and social status. On average, Americans drive nearly 40 miles and drive for just over 50 minutes driving per person per day (http://www.bts.gov). That means a person spends roughly one-sixteenth of a day driving. It would make sense, then, to make such an essential part of society as efficient, cost effective, and clean as possible. However, that is not the case. As the years have passed cars have actually begun to move away from efficiency. Hawken writes, “[The automobile] design process has made cars ever heavier, more complex, and usually costlier. These are all unmistakable signs that automaking has beco...
The degrees of freedom (df) of an estimate is the number or function of sample size of information on which the estimate is based and are free to vary relating to the sample size (Jackson, 2012; Trochim & Donnelly, 2008).
The topic of global warming has been looming over our guilty shoulders since the early 1900’s. Transportation is the top contributor of greenhouse gas emissions which forms a barrier in the ozone, trapping in heat and heating our planet to unforeseen temperatures, much like a greenhouse. Over 225 billion gallons of gasoline is burned for transportation in the United States alone (CNN 2013.) All the harmful emissions from vehicles are starting to add up and scientists are watching the ice caps...
Being a member of the future generation of innovators and leaders, I feel that this research combined with my fascination of automobiles could lead to a clearer understanding of how I can help improve the automobile. In a world that is highly connected by roads, if the problem of using petroleum-based fuels is not solved, the entire gas-guzzling world could come to a standstill. This apocalyptic halt would cease all travel and we would be thrown back to a more primitive standing. However, if we research and find an alternative ahead of time, we would be able to transiti...
This study will focus on the issue of obesity among people. Obesity is one of the prominent issues that the society is facing due to the insufficient information that people have regarding the amount of food intake as well as how people ought to balance their diet. It seems that the problem of obesity is not only experienced in one country but in different countries and this does not only choose certain gender and age but a person who suffers obesity could be an adult or a child, female or male.
Most American cars are not hybrids or fuel-efficient, they are usually big SUV’s or trucks that get eighteen to ten miles per gallon. Most of Hondas, Toyotas, and Hyundai’s get around 20 to 30 miles per gallon, and hybrids get 50 miles per gallon. Peoples demand fuel-efficient cars because oil is i...
Who are we? What is the meaning of life? What does it mean to be human? These questions, asked since the beginning of time, speak to the universal difficulty we have in understanding our nature and purpose in this world. Luckily for us, we have also developed a perfect medium for exploring this historic dilemma: poetry. Czeslaw Milosz and Wislawa Szymborska deftly took on this challenging exploration in their poems “Incantation” and “A Word on Statistics,” respectively. Interestingly enough, they reach similar, but not identical, conclusions because the former is much more optimistic.
This chapter taught me the importance of understanding statistical data and how to evaluate it with common sense. Almost everyday we are subjected to statistical data in newspapers and on TV. My usual reaction was to accept those statistics as being valid. Which I think is a fair assessment for most people. However, reading this chapter opens my eyes to the fact that statistical data can be very misleading. It shows how data can be skewed to support a certain group’s agenda. Although most statistical data presented may not seem to affect us personally in our daily lives, it can however have an impact. For example, statistics can influence the way people vote on certain issues.
The Advantages and Limitations of Social Surveys in Sociological Research To survey something, is to carry out a systematic overview so that a researcher can produce a comprehensive general report on it. Survey method is often used by positivist sociologists seeking to test their hypotheses, and to investigate causes and examine variables. As with every other sociological research, survey has its own advantages and limitations. Positivist research, which is in the scientific tradition, begins with a hypothesis that can be either confirmed or rejected according to the data collected. One of the significant advantages of survey method is that, it can be used to collect data that is a representative of a larger population.
Today, people use their own personal vehicles to travel more than ever before. Personal transportation is no longer considered a luxury; it is now considered a necessity. The number of cars in the United States has been growing steadily since the 1970s. The number of miles traveled by cars has risen nearly 150 percent, yet the United States population has only grown roughly 40 percent during that time (hybridcars.com, Driving Trends). Although it may seem like we are advancing into the future, in reality, we are moving backwards from the effects these vehicles have on our bodies and the environment. The pollution produced by these vehicles has brought us to the day where we must find other modes of transportation that cause less harm to the world in which we live. Advances in technology have developed hybrid vehicles to try and slow down the amount of pollution. Driving a hybrid vehicle, instead of a conventional gas powered vehicle, can reduce the amount of pollution that affects our lives and the environment around us.
In order for Americans to get the most out of their vehicles, and to decrease the amount of gasoline Americans use, we need to push and test every aspect of the modern day vehicle. According a study done by the United States Department of Energy, approximately 1.2 billion gallons of fuel are exhausted by U.S. motorists each year (Siggerud, 2007). This is over three billion dollars wasted per year.
Whether or not people notice the importance of statistics, people is using them in their everyday life. Statistics have been more and more important for different cohorts of people from a farmer to an academician and a politician. For example, Cambodian famers produce an average of three tons or rice per hectare, about eighty per cent of Cambodian population is a farmer, at least two million people support party A, and so on. According to the University of Melbourne, statistics are about to make conclusive estimates about the present or to predict the future (The University of Melbourne, 2009). Because of their significance, statistics are used for different purposes. Statistics are not always trustable, yet they depend on their reliable factors such as sample, data collection methods and sources of data. This essay will discuss how people can use statistics to present facts or to delude others. Then, it will discuss some of the criteria for a reliable statistic interpretation.
The fast population growth rate of humans means that the necessity for transportation vehicles is also enormously increasing. Studies have shown that in 1999 the worldwide number of vehicles registered was 700 million. From this huge number of vehicles, the US has a large share, which includes 200 million cars and light trucks. The number of cars worldwide also grew three times faster Competition for good things like public health, making the earth safe to live are positive aspects of competition, but global competition can also have a downside concerning the environment. This is true for the production of vehicles, as companies are coming with designs and new models with improved engines, but fuel consumption and the pollution of the air remains the same.