Line graphs provide an excellent way to map independent and dependent variables that are both quantitative. When both variables are quantitative, the line segment that connects two points on the graph expresses a slope, which can be interpreted visually relative to the slope of other lines or expressed as a precise mathematical formula. Scatter […]

Suppose you have 2 sets of data to work with. The first set is a list of all the injuries seen in a clinic in a month’s time. The second set contains data on the number of minutes that each patient spent in the waiting room of a doctor’s office. You can make assumptions about […]

  The Youth Risk Behavior Survey (YRBSS) is a national survey monitoring health behavior among youth and young adults. It is administered by the Centers for Disease Control and Prevention (CDC). For this assignment, use the "Youth Risk Behavior Surveillance System Dataset" provided to practice calculating and interpreting the t-test. Refer to the instructional videos […]

  Data Collection Practice A maker of energy drinks is considering abandoning can containers and going exclusively to bottles because the sales manager believes customers prefer drinking from bottles. However, the vice president in charge of marketing is not convinced the sales manager is correct. Investigate this issue using statistical analysis. Explain which data collection […]

   1) Middleton and colleagues (2010) conducted a study to look at the relationship of physical activity over the life course (i.e., at different ages) and the development of late-life cognitive impairment. They analyzed cross-sectional data using logistic regression, and reported the following results: Describe the results of the study as represented in the table […]

   1. Use Excel to develop a scatter diagram of the data, including dependent and independent variables on their correct axis. 2. In a Word document, analyze the relationship between sales and number of clerk hours worked. 3. Conclude, based on the scatter diagram, what adjustments the sales manager might make to address the relationship […]

   A researcher studied women with breast cancer to better understand the association between self-rated health and all-cause mortality (Prehn, 1996). Women were interviewed twice, and survival models were used to assess the association between self-rated health 12 months after breast cancer diagnosis and all-cause mortality. The following results were obtained from three different models:  […]

Complete the Case Study on page 260. Type your responses in a Word document. Be sure to number your responses properly. Show all your calculations where applicable. You can use Excel to calculate the probabilities for Exercise 4 and 5. If you do, please submit the Excel file as well. IMG_2031.jpg IMG_2028.jpg IMG_2027.jpg IMG_2024.PNG IMG_2025.PNG […]

   Directions: Please complete the following statistical analyses for the sample data given below. If you do the work for this project by hand, you must show the work you do to arrive at your results. If you use technology (Excel, StatCrunch, graphing calculator, etc.) to obtain the results, you must state the technology you […]

In a randomly selected sample of women ages 20-34, the mean total cholesterol level is185 milligrams per deciliter with a standard deviation of 40.2 milligrams per deciliter. Assume the total cholesterol levels are normally distributed. Find the highest total cholesterol level a woman in this 20-34 age group can have and still be in the […]