DAT 640 Practical R Activity Eight

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.

The Excel file for this assignment contains a database with information about the tax assessment value assigned to medical office buildings in a city. The following is a list of the variables in the database: FloorArea: square feet of floor space Offices: number of offices in the building Entrances: number of customer entrances Age: age of the building (years) AssessedValue: tax assessment value (thousands of dollars) Use the data to construct a model that predicts the tax assessment value assigned to medical office buildings with specific characteristics. Construct a scatter plot in Excel with FloorArea as the independent variable and AssessmentValue as the dependent variable. Insert the bivariate linear regression equation and r^2 in your graph. Do you observe a linear relationship between the 2 variables? Use Excel’s Analysis ToolPak to conduct a regression analysis of FloorArea and AssessmentValue. Is FloorArea a significant predictor of AssessmentValue? Construct a scatter plot…

Briefly describe the methods of collecting primary data

Sahar Rasoul-Math 7 End of Yea X Gspy ninjas book-Google docs.google.com/spreadsheets/d/1j5MotWzsc0V1V3Qyl4rbP_OFOUotaNXCIIFax> Copy of Copy of Col... 8.8 Sahar Rasoul - Math 7 End of Year Digital Task Cards Student Version ☆ File Edit View Insert Format Data Tools Extensions Help Last edit was 5 minu $ % .0 .00 123 Century Go... ▼ 18 Y BIS fx| =IF(B4="Question 1", Sheet2! H21, if(B4="Question 2", Sheet2! H22, IF(B4=" n 100% 36:816 A B C 6 16 A flashlight can light a circular area of up to 6 feet in diameter. What is the maximum area that can be lit? Round to the nearest tenth. 30x 0004 15 A Sheet1 https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.amazon.com%2FSpy-Ninjas-Ultimate-Guidebook-Scholastic%2Fdp 7 8 9 10 11 12 13 14 3 5. 7. a 5 $9 A

I need some assistance solving Part B of this question. Refer to the excel data in the image provided to answer Part B. SoftBus Company sells PC equipment and customized software to small companies to help them manage their day-to-day business activities. Although SoftBus spends time with all customers to understand their needs, the customers are eventually on their own to use the equipment and software intelligently. To understand its customers better, SoftBus recently sent questionnaires to a large number of prospective customers. Key personnel—those who would be using the software—were asked to fill out the questionnaire. SoftBus received 82 usable responses, as shown in the file. You can assume that these employees represent a random sample of all of SoftBus's prospective customers. SoftBus believes it can afford to spend much less time with customers who own PCs and score at least 4 on PC Knowledge. Let's call these the "PC-savvy" customers. On the other hand, SoftBus believes it…

Answer the questions in the picture please, explain each answer please! Thank you!

Please help me with this. It only needs an answer.. Just this please.. You don't need to solve anymore.   *It deals largely with the summary calculations, graphical displays and describing important features of a set of data. It does not attempt to draw conclusions about anything that pertains to more than the data themselves. a. Variableb. Samplingc. Descriptive Statisticsd. Inferential Statistics   *Linear Programming. It is an expression which shows the relationship between the variables in the problem and the firm’s goal. It is generally preceded by the word “maximize” or “minimize”. a. Parameterb. Constraintc. Optimum Solutiond. Objective Function

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

Excel Exercise Week 5 Chapter 7 workbook. Please upload your answers as an excel file with properly labeled answers. Please answer in excel only. Data are collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo after treatment for 5 days with the new compound or placebo, the extent of wound healing is measured and the data are shown in table 7-6. Is there a difference in the extent of wound healing by treatment? (hint: are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level of significance. Percent Wound Healing Treatment                0-25%           26-50%             31-75%               76-100% New Compound (N=125) 15          37                     32                        41 Placebo(N=125)                  36          45                     34                         10 Table 7-6

Please answer as much of the question as possible. Also, please list the solution in the same format as the provided screenshot. Thank you

Explain when can we use data grouping?

Can you answer A,B,C with clear answers. You can use the data in the second photo

Learning math The Core Plus Mathematics Project (CPMP) is an innovative approach to teaching Math-ematics that engages students in group investigations and mathematical modeling. After field tests in 36 highschools over a three-year period, researchers comparedthe performances of CPMP students with those taughtusing a traditional curriculum. In one test, students had tosolve applied Algebra problems using calculators. Scoresfor 320 CPMP students were compared to those of a control group of 273 students in a traditional Math pro-gram. Computer software was used to create a confidence interval for the difference in mean scores. (Journal forResearch in Mathematics Education, 31, no. 3[2000])Conf level: 95% Variable: Mu(CPMP) – Mu(Ctrl)Interval: (5.573, 11.427)a) What’s the margin of error for this confidenceinterval?b) If we had created a 98% CI, would the margin of errorbe larger or smaller?c) Explain what the calculated interval means in context.d) Does this result suggest that students…

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.

//$$/$/$/$::$/$:Helppppppp

year- 2000,2005,2010,2014,2019 tuition-$1242,$1809,$2680,$3356,$5132 what is the equation for the least squares regression line? what will tuitions be for the year 2025? when will tuitions be $6500?

7

How Panel Data is useful to control some types of omitted variables without actually oberving them?

please do with rstudio and provide all the codes.

On December 17, 2007 baseball writer John Hickey wrote an article for the Seattle P-I about increases to ticket prices for Seattle Mariners games during the 2008 season. The article included a data set that listed the average ticket price for each MLB team, the league in which the team plays (AL or NL), the number of wins during the 2007 season and the cost per win (in dollars). The data for the 16 National League teams are shown below. team league  price    wins  cost/win Arizona Diamondbacks NL 19.68 90 35.40 Atlanta Braves NL 17.07 84 32.89 Chicago Cubs NL 34.30 85 65.33 Cincinnati Reds NL 17.90 72 40.32 Colorado Rockies NL 14.72 90 26.67 Florida Marlins NL 16.70 71 38.13 Houston Astros NL 26.66 73 59.11 Los Angeles Dodgers NL 20.09 82 34.64 Milwaukee Brewers NL 18.11 83 35.37 N.Y. Mets NL 25.28 88 46.56 Philadelphia Phillies   NL 26.73 89 48.69 Pittsburgh Pirates NL 17.08 68 40.67 San Diego Padres NL 20.83 89 38.15 San Francisco Giants NL 24.53 71…