Preview
Preview

# Statistics Essay

Missing Works Cited
Length: 1090 words (3.1 double-spaced pages)
Rating: Orange

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Statistics are necessary for scientific research because they allow the researchers to analyze empirical data needed to interpret the findings and draw conclusions based on the results of the research. According to Portney and Watkins (2009), all studies require a description of subjects and responses that are obtained through measuring central tendency, so all studies use descriptive statistics to present an appropriate use of statistical tests and the validity of data interpretation. Although descriptive statistics do not allow general conclusions and allow only limited interpretations, they are useful for understanding the study sample and establishing an appropriate framework for the further analysis in the study. Further analysis using appropriate statistical methods allows the researchers to establish correlations between independent and dependent variables, define possible outcomes, and identify areas of potential study in the future accurately. Statistics is important for researchers because it allows them to investigate and interpret the data more accurately, and researchers will notice patterns in the data that would be overlooked otherwise and result in inaccurate and possibly subjective conclusions (Portney & Watkins, 2009).
Frequency distribution is a method used in descriptive statistics to arrange the values of one or multiple variables in a sample, so it will summarize the distribution of values in a sample. Frequency distribution is the most basic and frequently used method in statistics because it creates organized tables of data which can be used later to calculate averages or measure variability. The organized data frequency distribution provides continuous data that is easier to work with than raw data obtai...

... middle of paper ...

...loser to the population mean and the plot would display a normal curve because a sampling distribution always forms a normal curve (Portney & Watkins, 2009). When the frequency distribution graph shows a normal curve, it is possible to determine its variability and estimate the standard error of the mean in compliance with the sample data. Unlike probability, an estimate of the population distribution allows researchers to establish the probability of selecting a sample with a predictable mean. Although the sampling distribution for predicting single outcomes is not applicable in reality, sample data can be used to draw inferences about the entire population from one sample, but it is never used to measure variance directly.
However, sample data finds applications in several researches that require estimating unknown population parameters (Portney & Watkins, 2009)

## Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Title Length Color Rating
- Statistics should be interpreted with caution as they can be misleading; they can both lie and tell the truth. Whether or not people notice the importance of statistics, statistics are used by different cohorts of people from a farmer to an academician and a politician in their everyday life. For example, Cambodian famers produce an average of three tons or rice per hectare, connection about eighty per cent of Cambodian population is a farmer, and at least two million people support party A?. According to the University of Melbourne, statistics are about making conclusive estimates about the present or to predict the future (The University of Melbourne, 2009)....   [tags: Statistics]
:: 4 Works Cited
942 words
(2.7 pages)
Better Essays
- The Essentials of Studying Statistics Introduction Making effective business decisions are always based on cost, time and prospect. Calculating money cost, time cost and forecast of return, all are based on marketing research, data mining, information analysis and findings. The way of the finding the answer is statistics. Statistics – The Method of Organizing Data Broadly, statistics is a set of disciplines for study quantitative information. Implied that several methods used to collect or process or interpret quantitative data from large amount of information, then finally generate a calculated number, for example average, mean, standard deviation…etc....   [tags: Statistics] 1242 words
(3.5 pages)
Strong Essays
- ... The software that researchers use is often very expensive and has a steep learning curve. But, you don’t have to be a statistician or mathematical genius to use data. Descriptive statistics do not require one to have the statistical software or the statistical knowledge to describe the basic features of the data, but more often than not, descriptive statistics can be very powerful and persuasive when used appropriately. Defenders can use descriptive statistics to present quantitative descriptions of the data in a manageable form and it helps defenders to simplify large amounts of data numerically and/or graphically....   [tags: data, inferencial statistics]
:: 1 Works Cited
1943 words
(5.6 pages)
Powerful Essays
- Statistics We define statistics as a branch of mathematics as a means to analyze, understand what we observe and explain synopses, so as to create sense and meaning of our explanations and observations. Each day in life we come across information that originates in various forms. This is to means in order to put sense in this information; there is the necessity to use statistics. Though, due to its empirical applications and focus, statistics is typically regarded as a distinctive math’s sciences and not only a math’s branch (Chance et al, 2005) Therefore, in certain tasks a statistician use is less mathematical; for example, ensuring that collection of data is carried out in a way that yie...   [tags: numerical summaries, inferencial statistics]
:: 4 Works Cited
997 words
(2.8 pages)
Better Essays
- Report on the Motion Picture Industry The motion picture industry is just like any other industry and to be successful it must turn a profit on the movies it creates and produces. Everyone loves movies and the motion picture industry does everything in its power to produce movies that will bring in millions of dollars in profits. The motion picture industry has created high grossing movies such as Spider-Man 3 with a total gross of \$336,530,303 as well as flops such as Sea Monsters: A Prehistoric Adventure, which only brought in \$23,746,066....   [tags: descriptive statistics]
:: 2 Works Cited
1008 words
(2.9 pages)
Strong Essays
- Quality management frequently uses statistical methods to identify the existence of a quality problem and to analyze the root cause of the problem. Statistical methods require the collection of numerical data related to a process under investigation. The data can then be used to identify trends that can affect quality such as the rate of variance in the outcomes of a production process. The descriptive or inferential analysis of the statistical methods can also provide information about the most likely causes of the problem....   [tags: histogram, inferencial statistics, data]
:: 5 Works Cited
902 words
(2.6 pages)
Better Essays
- I read Barron’s How to Prepare for the AP Statistics Exam. A very educational book helped a lot on the AP test. It clarified ideas that I was uncertain on. It helped me to understand when to use each test and the assumptions needed for each test. Type I and Type II errors were explained in such a way that they became crystal clear to me instead of muddy. Computer and Minitab outputs were thoroughly explained, and I became comfortable with them after reading this book. The Barron’s guide also formatted equations in the same manner as the AP equation sheet, which helped me become familiar with this format before going into the AP test....   [tags: Advanced Placement Statistics] 957 words
(2.7 pages)
Strong Essays
- Arguments over crime statistics have been raging ever since governments began counting criminal activity. In 1930 the United States congress authorized the attorney general of the United States to survey crime in America. The Federal Bureau of Investigation was chosen to implement the program. (Schmalleger p.38) The Uniform Crime Reports is the survey taken by the FBI. This measure of crime in America depends on reports to the police by victims of crimes. The UCR Program was developed by the FBI for the purpose of serving law enforcement as a tool for operational and administrative purposes....   [tags: crime statistics] 758 words
(2.2 pages)
Good Essays
- Statistics are necessary for scientific research because they allow the researchers to analyze empirical data needed to interpret the findings and draw conclusions based on the results of the research. According to Portney and Watkins (2009), all studies require a description of subjects and responses that are obtained through measuring central tendency, so all studies use descriptive statistics to present an appropriate use of statistical tests and the validity of data interpretation. Although descriptive statistics do not allow general conclusions and allow only limited interpretations, they are useful for understanding the study sample and establishing an appropriate framework for the fur...   [tags: Data Analysis, Frequency Distribution] 1090 words
(3.1 pages)
Good Essays
- Statistics Hypotheses 1. The higher the IQ, the higher the average SATs results. There will be a stronger relationship between the girls’ IQ and SATs results than the boys’. 2. Boys will have a higher IQ than girls. 3. IQ will increase as age increases. Plan I have been given two sheets of containing 100 pieces of data on each. The data is secondary as I have not collected it myself. One set is from key stage three and the other from key stage four. The data includes year group, forename, age, gender, hair colour, eye colour, favourite type of music, IQ, height, weight, distance between home and school and SATs results....   [tags: Papers] 1017 words
(2.9 pages)
Good Essays