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- Atlantic hurricanes form off the western coast of Africa. As warm moist air rises, it begins to rotate around a low- pressure system. This rotation is sustained by warm ocean temperatures and a central low pressure. Once a sustained wind speed of 74 miles per hour is reached, the storm is considered a hurricane. As man-made climate change continues to increase the temperature of the Earth's oceans, it is expected that the strength of hurricanes will Typically, a lower central pressure within a hurricane's eye is associated with a higher wind speed. Here, statistical software (R/RStudio) will be used to explore this relationship by applying linear regression methods. Using a database of landfalling hurricanes in the United States, a linear regression will be used to correlate the central pressure of each hurricane to its maximum sustained wind speed. increase. Regression Plot y=942.196-0.884*x R^2=0.768 ----- ----------- -. •... •. 980 1000 940 960 900 920 Independent Variable (x)…You are responsible for a data analysis exercise in your first job (as a data analyst) after graduating and have downloaded some associated reports. Your first task requires you to write a data dictionary and determine what type of variable the data you are dealing with relates to. Which of the following are categorical variables? Select one: a. The number of marks out of 10 that an employee obtained on the company’s information technology training. b. The number of employees in each division c. The number of years of service of each employee. d. The employee’s tax file number. e. The pro-rata income for all employees within the business/finance division.2.) What is the role of the error terms? VENTAS OMNIA 1940
- a) A wedding photographer made $500 on average in the 5 years it has been operational. A sample of 12 months were analyzed and it was found that he made an average of $620. Does the value $500 refer to the parameter or to the statistic? Is the value $620 a parameter or a statistic? iii. State two advantages of using a sample statistic rather than a parameter. b) For each the following variables, state which is quantitative and which is qualitative. If it is quantitative, state whether it is discrete or continuous. The amount of flour added to bake a pie The temperature of a glass of milk iii. The addresses of all patients at a dental office c) Choose the level of measurement described below Rate how satisfied are you with your customer service (ordinal, interval) The distance Madison runs every morning (interval, ratio) iii. The Magazine that sells the most copies in a month…Select the correct statement. This student is arguing against school choice. Which statement best serves as the writer’s claim? School Choice: Good Intentions, Extremely Harmful Since the desegregation of schools in America, the question of school choice has been at the center of many heated debates. Some argue that charter schools or school choice programs put public schools at risk. Those people also argue that some neighborhood schools would suffer if kids had the freedom to commute to schools of their choice. Others argue that parents should control where their students learn, even if it means going to a school outside of their zoned area. However, school choice highlights problems with the inequities in the school system. All schools should provide students with quality education and school choice prevents that from happening.Four different beverages are sold at a fast-food restaurant soft drinks, tea, coffee, and bottled water. Answer parts (a) and (b) a. Explain why the type of beverage sold is an example of a categorical variable. Choose the correct answer below OA Type of beverage sold is a categorical variable because the values of the variable arise from a measuring process OB. Type of beverage sold is a categorical variable because the values of the variable can only be placed into categories OC. Type of beverage sold is a categorical variable because the values of the variable arise from a counting process OD. Type of beverage sold is a categorical variable because the values of the variable represent quanteles b. Explain why the type of beverage is a nominal-scaled variable Choose the correct answer below OA Type of beverage sold is a nominal-scaled variable because there are no rankings for the different values of the vanable OB Type of beverage sold is a nominal-scaled variable because the…
