Statistics Essay Examples and Topics. Page 2

By comparing two groups smoking and non-smoking adolescents through a parametric t-test, it is possible to examine this assumption and draw conclusions based on the resulting p-value.

To calculate a Z-Score, use this formula: Z = / Where: x is the score you want to calculate the Z-Score for is the mean or average of the distribution is the standard deviation.

Old sensors returns = x = 8, and new sensors returns = x = 17. Old sensors = n = 250, and new sensors = n = 250.

At the early stages of the statistical analysis, the research was focused on defining the values of the independent variable of religious affiliation and the dependent variable of one's sexuality.

After defining the preliminary conclusions and the reason for the necessity of the experiment, it is necessary to outline the methodology used in the research.

While it was generally clear from the material that the use of regression does not provide universal answers for the relationship between devices and mental well-being, the overall narrative could have been improved by the [...]

Because all of the data used in this project were of the quantitative type, it was relatively easy to calculate the values of the central tendency measures for them.

Data set was obtained from the NBA was categorical to the; NBA Team, year of specific games, points scored, and average level of the competence of the team.

The current dataset allowed us to test the OR for the relationship between family history of diabetes and the presence of diabetes in a particular patient: all variables were dichotomous and discrete and could take [...]

Specifically, gender, age, race, height, BMI, and income are the ideal externalities in the "diabetes" model. Gender, race, weight, and age are the perfect confounders in the "allergies" equation.

Self-esteem and "I use social networking for gratification" has a weak positive correlation, r =. The interaction between the post frequency binary and the social comparison F =.

Thus, the chronological data allow us to evaluate not only the countries among themselves according to this criterion but also to provide the dynamics of the change in the happiness index within the country.

The study of the effectiveness of a drug is carried out on the basis of not generally all patients on the planet, but only a particular group of patients.

For example, when developing drugs in market quantities, it is critical to use the exact value of the active agent, and using a 99% confidence interval creates a requirement of near-analytical accuracy for calculating the [...]

The Signal and the Noise by Nate Silver reveals a heartfelt approach to statistical interpretations and predictions of data. Furthermore, Silver encourages statisticians to try and err, making many attempts and tests of the ideas [...]

The relationship between the independent and dependent variables is the primary focus of the research. Therefore, to measure the validity and reliability of the research idea, it is crucial to investigate the consistency of obtained [...]

The population of interest consisted of American citizens from all 50 states of the USA and the District of Columbia aged 18 and higher.

Hence, confidence intervals and confidence limits, in particular, are used to estimate sampling parameters, while hypothesis testing is a method that shows whether the hypothesis is reliable or not.

The main focus of the statistical analysis is to evaluate and determine if there is a significant difference between the housing issue in the region and those in the national market.

The authors were smart to use it as the initial stage, leading to emphasizing the probability of behaviors that were relevant to the case. The tests contribute to ensuring accuracy and validity of making these [...]

0, the p-value is 0. From the correlations results in table 3.

With IQR and Q1, Q3, it becomes possible to determine any outliers in the numerical set. If outliers were found in the sample, this indicates not only the potential for incorrect data but also random [...]

Consequently, sampling can be defined as a method used to select a required sample from the whole population. Furthermore, probability-based methods can be divided into simple random sampling, systematic sampling, stratified sampling, and cluster sampling.

Within the framework of the discussed topic of the project, hypotheses will be established in the next question, but now it is clear that it will be necessary to test them statistically with the help [...]

The purpose of the analysis will be to determine if the proportion of returned blenders with new switches were deferent from the proportion of blenders with old switches.

With YSG's culture of hiring veterans and relatives to the veterans, this is an indicator that the company is benefiting from the military mindset in its business. The company has a significant number of employees [...]

There are several data measurement scales which include the nominal, and their main purpose is labeling different variables with the absence of quantitative importance. The scales like the mean and mode of different statistical samples.

The objective of this test is to determine if the average sales price for the real estate prices differs from the estimated value of $275.

At the same time, Travers tries to go beyond this notion and seeks to find out the rules of interaction and the organization of ritual experience, using the data concerning punks and nurses.

Partial regression plots are intended to help address that problem by analyzing the responses of both the target predictor and the response variable against the other predictors.

They choose a sample instead; the sample is a set of people who are indeed involved in the study. Data gathering is the methodical way to collect and measure information from various sources to provide [...]

To choose the participants of the study, the sampling method was used to represent the entire population. In the study, as shown in below, the empirical rule, the lowest numbers for 68%, 95%, and 99.

Two primary software choices are available for the analysis of the qualitative data obtained for the Title IV-E project: Dedoose and Microsoft Excel.

In other words, the article expresses the main criteria as to which to evaluate the statistics and conclude whether the facts and outcomes derived from it are bound to be truthful or not.

Although there is a clear distinction in the levels of employment between these two groups, the margin of difference is relatively smaller compared to the first two groups in the chart.

From the data analysis, the statistical mean and the sample standard deviation were found to be 65. From the study, the probability of participants being shorter than 64 inches was 0.

The purpose of this chart is, therefore, to find out how the various groupings compare to each other in terms of income levels and the impact of time on average income. At the top of [...]

The data have met this assumption for age category, sex, obesity, and hypertension are on nominal scale while cholesterol level and age are on a continuous scale.

In the given dataset, the censoring variable will be stroke, because the cases will be censored according to it; the cases will be right-censored if stroke=0, i.e.for those patients who did not have a stroke [...]

Explained variation and the Brier score are two of the methods that can be used for the assessment of predictive models.

With the controlled effect of gender, partial correlation analysis indicates that anxiety and exam performance have a statistically significant negative relationship.

Table 1 provides measures of central tendency, namely, means, modes, and medians of the waiting time for eruptions and the duration of eruptions in minutes.

In this work tables and other statistical graphics are used to plan, collect and prepare data on the US smartphone market and the movie industry.

The study focused in the collection of data about the prevalence of obesity among students in China. In addition, stacked charts were used to explain the distribution of variables.

The feeling and views of the selected people are assumed to be the views of all the people who belong to that group.

A confidence interval is a statistical formula that indicates sample measurement's precisions, it also predicts how close a sample data is to the original estimate.

One of the key business issues in regards to the selected sport is the evaluation of player performance metrics, which is especially critical in regards to quarterbacks, who are responsible for scoring touchdowns.

The scatter plot shows that the annual average rainfall and runoff have positive relationships. 23% of the variation in the monthly average runoff.

The analysis of variance of the significance of firms' size on their efficiency scores in the dataset is shown in the Table 2 below.

The variable inj had a mean of 4. 23 and a standard deviation of 0.998.for the variable int, the mean was 4.

The research problem identified by the investigator relates to the prevalence of distress in the police occupation. The primary variable of the study was the mean stress measure, which was derived from the Langner-22 list [...]

The mean value in this data set shows the average value of the response, while the median is the middle value within the response if they are arranged in sequence.

The reliability of each substance is evaluated as the square of the relationship betwixt the underlying element and the observed parallel element score.

One of the variables that are important in determining the home price is the economic indicators. The other variable that will determine the price of a home is the neighborhood.

However, the difference between the groups is greater than the difference within the groups, and the number of discharges was not substantially different among the groups.

Referring to the source makes it clear that in his article Southekal referred only to the data that were most relevant in the context of the topic: the report provides additional statistical information.

Based on the initial observations, the highest mortality from CHD was observed in states with the most cigarettes sold, while the lowest was recorded for the least sales.

To begin internal level design, it is important to learn the key terms. Firstly, a table is used for a systematic representation of collected data.

Married women represent the majority of the pull. Table: Distribution of payment methods used by the customers

As seen in Table 1, the mean of the Percentage of the Disadvantaged Students is 42. As seen from Figure 1, the distribution of values is right-skewed and platykurtic.

The goal of blackjack is to beat the dealer's point total without going over 21 and there are three ways to beat the dealer: Get 21 points on the player's first two cards without a [...]

The aim of this essay is to spotlight the data that the Pearson formula can be used for, and how to perform hypothesis testing using the statistical application of Pearson? A statistical hypothesis can be [...]

The use of the chi-square test in research is needed to compare the distributions of two or more groups whose variables fall into two or more different classes or categories.

The second formula is the calculation formula and this is the one that should be used for calculating variance for a set of data.

The Z-test is usually used with standardized testing to determine if the scores of a certain sample of test-takers are inside or outside of the standard performance of test-takers.

In a directional hypothesis, care must be taken to perfectly match the null hypothesis so that all possibilities will be covered.

Statistics are usually used to provide the data for those graphics, as well as to show the results of projects, or information on demographics for example.

5 years shows that the age values of the 10 patients are not skewed towards one end given that the minimum age is 35 years and the maximum age is 86 years.

Table 2 indicates that cultural factors have a moderate positive correlation with the business sense to employ Emiratis, a very strong positive correlation with the provision of productive job opportunities, and a strong positive correlation [...]

The investigator needs to take into account the specifics of the data that they have and the data that the test is fit for and use appropriate variants that are quite numerous nowadays. A PT [...]

It is however noted a misperception of the two as said: '...based on the experience of the last few generations, the assumption that rising prosperity remains the main source of improved standards of health throughout [...]

Hence, the first hypothesis is formulated as follows: H0: Younger individuals are more likely to spend more hours for indoor sport activities.

The purpose of the present report is to determine if there is a direct correlation between the age of drivers and blood ethanol concentration after a car crash.

Most of the female population was in the 20-24, 25-29 and 30-34 age brackets. Meanwhile, the majority of the male population was found in the 25-29, 30-34 and 35-39 age brackets.

Total number of appeals =1762 Total numbers of reversal is 199 Probability= 100=11. 1129 Domestic relations court Total numbers of appeals=106 Total number of reversals=17 Probability= 100=16.

After designing the models, the user can solve the samples before fitting them to the data with the help of special mathematical and statistical methods. Thereafter, the user is required to describe the attributes of [...]

The main objective of this exercise is to use two sets of data; smoking 1.sav and grades 2.sav to develop and test hypothesis.

This paper aims to find out the type of customers who patronize the business in terms of gross annual income, gender, marital status, family status, employment status, and distance from the store. Different customers see [...]

The implementation of statistical analysis, in this case, takes the form of determining to what extent specific employee training programs can derive the greatest amount of performance from employees while determining the necessary cost of [...]

Table 1: The amount of time I spend cooking meals each day From the data, the longest time was spent cooking on days when I had three meals in the house on days 1 and [...]

The primary goal of the first part is to conduct the sufficient regression analysis to determine the interdependence and relationship between the variables.

Are there any differences in the daily low temperatures across the three cities? H0: ltNY = ltLA = ltCH Alternative hypothesis: There is a difference in the daily low temperatures across the three cities.

Is the mean starting salary for a bachelor's student $30,000? The mean starting salary for a bachelor's student is $30,000.

The formula is as follows: Where: n- Sample size in a study Variance of the population Z2- Variance/Error2 Error2- Square of error

The paper carries out simple regression analysis to establish the relationship between salaries and the number of years the employees have worked in the organization.

The ratio of loan default for the customers with A level to postgraduate and those who lack formal education to GCSE is 3: 4.

High school and seeks to explain how it is used, the four levels of measurements and their use in the school, examples of descriptive and inferential statistics, and finally the advantages associated with accurate interpretation [...]

This type of test can also be used in situations where a highly skewed population is present as opposed to the parametric type of statistical test.

The hypothesis of this study is to demonstrate that during this 21st century the attitude of the students toward learning has changed a lot.

Large values of the variance denote large dispersions, which implies the mean of the data set is not a good representation of the observed data. It also shows there is even dispersion from the mean [...]

The test is concerned with the degree of the relationship between the two or more variables and the direction of the relationship.

Segregated by bank group and criterion variable, the correlation-based shortlist of independent variables are as shown in tables 1 to 3 below and overleaf.

This is the data analysis of the population growth of the population in the states of the USA, which are organized in the table.

The net effects of the programme under evaluation can be assessed using regression analysis, by attributing part of the changes observed to explanatory variables, while the remaining effects are attributed to the programme.

Lastly, there are numerous studies such as the one by Phillipson and Erdbrink that demonstrate the capacity of spatial probability in improving the cost-efficiency of cellular networks for mobile operators by analyzing the spatial traffic.

It is important to remember that achieving a 100% guarantee that the study results are characteristic of the general population is possible only when continuous research is conducted.

The present report aims at analyzing factors that affect the commuting time of students to the university. Descriptive statistics of time to the university by gender.

The method of confidence interval calculation is more "effective" when there is no selection bias, that is, sampling is random, and no members of the population are more likely to be selected than some other [...]

From the scatter plot between the student extroversion and the student want extroversion in lecturers, there is a positive relationship between the student extroversion, and the student wants extroversion in lecturers.

From the histogram, we can observe that the festival data of day one is normally distributed about the mean of the data.

The number of injuries is a dependent variable that meets the assumptions of scale and homogeneity of variance, but it violates the lack of significant outliers and the normality of distribution.

In the current paper, a set of descriptive statistics on the sample of blood sugar counts of male and female patients will be closely explored.

A factorial ANOVA was conducted to compare the main effects of classroom size and gender and the interaction effect between classroom size and gender on math scores. Therefore, classroom size and gender have a significant [...]

Age of customers The color of gift wrappers Emotional impression Emotional rating H0: The color of gift wrappers and customers' emotional impression do not have a statistically significant association. H1: The color of gift wrappers [...]

It is commonly used to determine the appropriate sample size that is necessary to detect the effect of given research at the desired level of significance.

The purpose of the study consists in the attitude of mainstream teachers towards the inclusion of children with disabilities. The study deals with the inclusion of students with diverse abilities in a normal classroom Correlational [...]

It includes the statistical assumptions of the test, SPSS syntax and output including the mean, median, mode, range, minimum, maximum and standard deviation of the two variables, and a chart describing that data.

Whereas one-way variance analysis is used in measurement of the significance of the effects of a single factor, two way variance analyses facilitates measurement of the effects of two factors/variables simultaneously.

Alternatively, the purpose may be to test the null hypothesis, that is testing if the effect is only because of the input variables.

For example, if the study as in this case is about customer needs and perception with regard to a bar and restaurant business, it is possible to ask people from the population about this.

For instance, if there is statistical research and data pertaining to the foods which aggravate diabetes, it has the potential of influencing a great many lives.

This conclusion can also be drawn on the basis of a statistical analysis only. It can be concluded that the author has used many relevant statistical concepts and findings in this article to stress his [...]

Another purpose of this work is to consider the possible implementation of the Simpson's Paradox to the events that took place at Nuclear Tests Sites in Nevada, and namely the events that happened to the [...]

The information provided at the seminars showed that the technique of a perfect sampling should be selected considering the requirements of the research study and taking into account the company benefits.

The present study aims to investigate the impact of statistics anxiety on the academic performance of students enrolled in a statistics course.

Since the process of statistical measurement is important for research of different profiles, the validity of data collection is a crucial aspect.

The paper assumes that all the groups took the same tests, and all the gaps in the data set are treated as students not taking tests.

The data for the three variables will cover the period between 1980 and 2016. The data are summarized in the table below.

The theory of constraints overcame the difficulty leading to the beginning of the improvement process. Statistical Process Control also determined the control limits through the utilization of all the models in the control set and [...]

As the study hypothesized that the presence of mobile applications and gender determine the number of times services were booked in the high street in the past year, the study utilized analysis of variance.