Essays on Normal Distribution

Different Types of Facebook Page Posts

Different Types of Facebook Page Posts Social media marketing is consistently growing as more consumers and businesses become involved in social media sites, and various studies have confirmed the utility of social media sites such as Facebook in building brand image and equity for businesses owners (Kim, Sung, Lee, Choi, & Sung, 2016). However, the growing number of information available on the Internet also means users are overloaded with content and need to be selective of where they direct their attention. For Facebook page owners, that means their posts will be less likely to appear in the News Feeds of ...

Abstract

Statistics involves the collection, analysis, interpretation, and presentation of data. The analysis, interpretation, and presentation techniques use the excel program. The excel features make it easy for statisticians to conduct researches as the program provides a convenient way to enter data into the program and run to determine the actual outcome of research. In particular, the excel program is applied in the statistical research in different forms. For example, it can be applied to a database which stores data to allow easy retrieval for references if need be. In addition, excel allows the calculation of simple and complex statistical ...

The above section was crystal clear to me. With a population with sample means x̅1, x̅2, x̅3, x̅4, x̅5, and, x̅ for example, the sampling distribution involves all the averages. It follows that the sampling distribution of the sample means would give the average of the entire population. Moreover, the standard deviation of the sample means is the same as the standard deviation of the population divided by the square root of the sample size (n). And this value is the standard error of the mean. However, the topic of finding probabilities was clear ...

Report on the relationship between assets and sales

Executive summary A company’s investment in foreign assets has a bearing on the amount of foreign sales it makes. The regression analysis indicates a positive association between the ratio of foreign sales to total sales and the ratio of foreign assets to total assets. This implies that transnational companies should invest more in foreign assets to improve their foreign sales. They should also consider other factors affecting foreign sales such as international marketing strategies including advertising expenditure, among others. Investment in foreign assets is not the only contributor to foreign sales as indicated by the model’s coefficient ...

Business Research Project Final: Research Report & Presentation

Discussion and Interpretation of Tables and Figures We start our interpretation and discussion from the descriptive statistics. The descriptive statistics was calculated by the means of Excel and the results are summarized in the table below: The average smartphones sales are 877.3647 units sold with a standard deviation of 328.6233 units. The 50th percentile or the middle element of the data is 855.3 units. Most often, the volume of sales was 322.5 units. The coefficients of kurtosis and skewness show that the data is quite close to a normal distribution (values are close to 0). The lowest volume of ...

1.1. Early on, Dr. Vasella was able to identify that the company’s turnover rate is more than acceptable. It was becoming a problem for them to make people stay. He noted that it is not enough for the company to pay good money to their employees. They also must be able to solicit their commitment and drive for excellence at the same time. 1.2. One of the factors affecting this high turnover rate was the inability of the company to recognize talent for promotions within. By the time they do so, these potential senior executives were already on ...

Communication

Mean of a group of numbers is simply the average value of those numbers. Thus, mean is the sum of the values in a list divided by the total values in the list. Let us take a sample list of numbers i.e. 1, 6, 7, 7, 9. In this case, the mean is (1+6+7+7+9) / 5 = 6. Secondly, Mode is that number in a given list which appears the most in the list. In other words the number which is repeated the most times in a list is mode of that list. If one or ...

INTRODUTION

Catechol-O-methyl transferase (COMT) is an enzyme that plays a significant role in the metabolism of dopamine (DA) and amounts to approximately 60% or more of DA breakdown in the frontal cortex . The gene expressing the COMT enzyme could affect cognition and functioning of the brain via its action on dopaminergic function. A polymorphic variation occurs in the coding area of the COMT gene (a Guanine to Adenine replacement), changing the amino acid from valine (Val) to methionine (Met) at the codon position 158 (Val158Met) and consequently influencing the thermal tolerance and stability of the enzyme. Allelic discrepancies in enzyme ...

Value-at-Risk

Introduction Risk assessment is essential in portfolio management. A portfolio manager has the duty of maximising returns of the portfolio of the assets for each level of risk. Alternatively, a portfolio manager should minimise the risk of the portfolio at any level of return of the portfolio. Several models are used in assessing the risk involved in a portfolio of investments. Value-at-risk is widely applied in determining portfolio risk. We explore the concept of value-at-risk and its usage in portfolio management.

It is a model that measures how much the value of a portfolio could fall over a specified ...

Income and Expenditure

Introduction Income and expenditure contributes largely to economic measures of an individual, country or continent. They determine the credit worthiness of a person or economic stability of a given country. Hence, my report will cover how income of an employee relates with his expenditure in the U.S. What actually am determined to prove is that, when a person gets higher income will his or her expenditure increase or decrease? For instance, I managed to find discrete data concerning income and expenditure from the ‘Economic data for the U.S.: http://www.bea.gov/’. The data had three variables namely, months starting from the ...

Question 1

Central Limit Theorem states that when numerous independent random variables with a known variance and mean are statistically analyzed, they will assume a normal distribution with a bell shape. This is true in real life since most events tend to be near the population mean with the number of events decreasing as you move away from the mean in both sides. Therefore, most occurrences in real life that appear random will assume a bell-shaped normal distribution when statistically analyzed . Estimation and confidence interval are important in approximating the range of values of a population parameter using a sample from the population

Question 2

Confidence interval represents ...