DAT 640 Practical R Activity Eight

Thank you for any feedback on this one.

Create a side-by-side boxplot for vitamin D level vs. NewAge and a side- by-side boxplot for vitamin D level vs. country. Create a scatterplot to show the relationship between vitamin D level and Age. Compare these two side-by-side boxplots and the scatterplot and explain your findings. • Note: Write appropriate captions for the tables, graphs, and outputs.

Briefly describe the methods of collecting primary data

The r code for side by side boxplot of vitamind v newage and vitamin d v country. Scatterplot code for relationship between vitamin d level and age.

Recently, management at Oak Tree Golf Course received a few complaints about the condition of the greens. Several players complained that the greens are too fast. Rather than react to the comments of just a few, the Golf Association conducted a survey of 100 male and 100 female golfers. The survey results are summarized here. Excel File: data02-31.xlsx Male Golfers Green Condition Gender Too Fast Male Handicap Under 15 15 or more 25 25 a. Complete the crosstabulation shown below. Green Condition Female Too Fast 10 Fine Fine 40 Female Golfers Total Green Condition Handicap Under 15 15 or more Too Fast 1 Fine 9 39 51 Total Which group shows the highest percentage saying that the greens are too fast? - Select your answer - b. Refer to the initial crosstabulations. For those players with low handicaps (better players), which group (male or female) shows the highest percentage saying the greens are too fast? For the low handicappers, the - Select your answer - have a higher percentage who…

All analysis, calculations, and explanations must be done in a single Excel file (use separate Excel sheets for each question). Upload the completed Excel file using the file extension format Lastname_Firstname_RegressionProblem. Regression Problem Sarah Anderson, the business analyst at TV Revolution, is conducting research on the dealership’s various television brands. She has collected data over the past year (2022) on the manufacturer, screen size, and price of various television brands. The data is given in the file below. You have been hired as an intern to run analyses on the data and report the results back to Sarah; the five questions that Sarah needs you to address are given below.   Does there appear to be a positive or negative relationship between price and screen size? Use a scatter plot to examine the relationship. Determine and interpret the correlation coefficient between the two variables. In your interpretation, discuss the direction of the relationship (positive,…

On a cold day in Minneapolis, the afternoon temperature was 48 degrees before a cold front moved through. As the front moved through the temperature dropped an average of 5 degrees per hour for a total of 5 hours. 14 2/1 Identify the domain of the data set.

Recently, management at Oak Tree Golf Course received a few complaints about the condition of the greens. Several players complained that the greens are too fast. Rather than react to the comments of just a few, the Golf Association conducted a survey of 100 male and 100 female golfers. The survey results are summarized here. Excel File: data02-31.xlsx Male Golfers Male Green Condition Handicap Under 15 15 or more 25 25 a. Complete the crosstabulation shown below. Green Condition Gender Too Fast Fine Female 35 40 Too Fast 10 65 60 Fine 40 Total 100 100 Female Golfers 200 Green Condition Handicap Under 15 15 or more Too Fast 1 Note: This exercise is an example of Simpson's Paradox. 39 Fine 9 Total 75 125 Which group shows the highest percentage saying that the greens are too fast? Females, at 40% b. Refer to the initial crosstabulations. For those players with low handicaps (better players), which group (male or female) shows the highest percentage saying the greens are too fast? For…

A survey about social media reported that 82% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of social media, as compared to 55% of B2C marketers (marketers that primarily target consumers). The survey was based on 1,286 B2B marketers and 1,731 B2C marketers. The accompanying table summarizes the results. Complete parts (a) through (d) below. A. What is the probability that a randomly selected respondent is a B2C marketer? B. What is the probability that a randomly selected respondent plans to increase use of social media or is a B2C marketer? C. Explain the difference in the results in (a) and (b)

College GPA and Salary. Do students with higher college grade point averages (GPAs) earn more than those graduates with lower GPAs (CivicScience)? Consider the college GPA and salary data (10 years after graduation) provided in the file GPASalary. Develop a scatter diagram for these data with college GPA as the independent variable. PLEASE MAKE SIMPLE GRAPH. What does the scatter diagram indicate about the relationship between the two variables? Use these data to develop an estimated regression equation that can be used to predict annual salary 10 years after graduation given college GPA. At the .05 level of significance, does there appear to be a significant statistical relationship between the two variables? GPA Salary 2.21 71000 2.28 49000 2.56 71000 2.58 63000 2.76 87000 2.85 97000 3.11 134000 3.35 130000 3.67 156000 3.69 161000

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A survey about social media reported that 79% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of social media, as compared to 54% of B2C marketers (marketers that primarily target consumers). The survey was based on 1,333 B2B marketers and 1,669 B2C marketers. The accompanying table summarizes the results. Complete parts (a) through (d) below. A Click the icon to view the contingency table about social media use and marketers. Contingency table a. What is the probability that a randomly selected respondent plans to increase use of social media? (Round to three decimal places as needed.) Increase Use of Social Media? Business Focus B2B B2C Total b. What is the probability that a randomly selected respondent is a B2C marketer? Yes 1,049 901 1,950 (Round to three decimal places as needed.) No 284 768 1,052 Total 1,333 1,669 3,002 c. What is the probability that a randomly selected respondent plans to increase use of social media or is…

I need help with identifying the independent and dependent variables in excel.    Explain the step-by-step procedures in excel.

The Minister responsible for Trade and Industry has assigned you the task of evaluating the improvement in productivity ofmanufacturing businesses in South Africa. Data for one of the businesses you are to evaluate is provided. The data are themonthly average of last year and the monthly average for this year. Determine the percentage change in multi-factorproductivity between the two years.Labor: R8 per hourCapital: 0.83% per month of investmentEnergy: R0.60 per BTU

Explain when can we use data grouping?

What is meant by strategic mapping, and why is this technique especially useful in healthcare strategic planning?

The graph below shows response curves for three drugs, A, B, and C. The horizontal axis is dosage, and the vertical axis is response. (Note: The horizontal green line on the graph marks the minimum desired response level. The horizontal red line on the graph marks the maximum safe response level.) eb1c07da-7833-3e6e-9020-d2aae79d619a_90a3... A webwork.uits.iu.edu/webwork2_files/tmp/FA21-BL-MATH-M1... (a) Which drug requires the largest dose for the desired response? 10 (Enter A, B, or С.) The smallest dose? (Enter A, B, or C.) (b) Which drug has the largest maximum response? Нах B A (Enter A, B, or С.) Hin The smallest? 1,0 -1 10 (Enter A, B, or С.) -1 (c) Assuming (as your textbook does) that drugs with broader ranges of safe and reliable dosages are safer to administer, which of these drugs is the safest to administer? (Enter A, B, or C.)

Describe the three primary charts and graphs used to organize and display data.

Please look at the picture and explain all three examples (a, b, c). Explain what is the main effect of factor A and factor B and why do we have/do not have interaction in each example

Please *Find the equation of the least-squares regression line that models the data. *Graph the data and the regression line in the same viewing window using the parameters given below the graph choices. Choose the correct graph below. *Estimate the tuition and fees in 2005.