Essays on Statistics

Statistics is the mathematical science involving equations that are used to solve and analyze daily activities in the world around us.  Today, we have great knowledge of the world around us, and this information was collected mathematically through statistics (DeGroot " Schervish, 2012). We can use statistics to tell what...

Skewness Skewness is asymmetrical in a statistical distribution, where the curve appears distorted or concentrated either to the left or to the right. Skewness can be used to define the extent to which a distribution differs from normal distribution. When a curve or distribution in a graph is classical or symmetrical,...

Despite the existence of numerous meanings, outliers are understood as data points which are far outside the standard for a population or a variable. The outlier could be an observation or a reading that is too different from other readings to the extent that it raises suspicion in regards to...

The mean of the data is 14.8 while the standard deviation is 6.7646138. It means that on average, people spend 14.8 hours per week on cleaning. The standard deviation of 6.7646 shows the spread of the data from the actual mean. Using t-statistic, the confidence interval can be given as  S= 6.7646138,...

The type of food eaten determines eating habits of individuals. 2. How DNA affects height. Variables: Independent: DNA                  Dependent: Height Hypothesis: The DNA of an individual has impact on tallness or shortness of a person. Data Analysis How Food affects Habits The appropriate data analysis techniques for the study will be use of Statistical Package for...

The data collected will be analyzed by the researchers who are conducting the study. The researchers will also coordinate the effort of analysis. 2 How will data be analyzed and displayed? The analyzed data will be displayed using tables and graphs. 3 Against what “standards” will you compare your...

The negative value denotes that the labor cost of $75 was 0.681818 standard deviations lower than the average television repair cost of $90. The z-score for the  $100 labor cost From the z-value, positive  implies that the repair cost was above the mean cost by 0.454545 standard deviations. Question 2 Part a The shaded region...

Primary data simply means the data from the original source with the purpose in mind. It is the kind of data that has not been distorted by a third party unlike the secondary data that can be described as the kind of data that has been collected by any other...

One area of mathematics called statistics is concerned with gathering, analyzing, and managing data, frequently to make it more understandable and useful. (Brown Kass, 2009). Falsehoods and representational distortions, however, may have an impact on how customers and casual observers interpret data. When presenting data, some sleights of hand...

Score(Award 0 if the incorrect response is provided) Exceeds Normal Expectation 3 (The right response is provided along with strong sources and supporting data. The solution is based on statistical data analysis, reports, previous scientists' research, and other academic papers. highlights the data and statistics that support their response. The...

According to Sammer (2011), adults aged 45 and older made up around 40% of the workforce in the United States. He confirms that the present recession, rising insurance costs, and advancing social security age all contribute to the majority of older Americans working longer than expected (Sammer, 2011). Clearly, the...

Every month, the US Bureau of Labor Statistics calculates the unemployment rate in the United States. The Bureau of Labor Statistics used data from the U.S. Bureau of the Census's Current Population Survey (CPS), which covers 60,000 members of the civilian population over the age of 16. (Marthinsen 73). The unemployment...