Relationship between age and total cholesterol level

Reference no: EM13216031

A family doctor is interested in examining the relationship between a patient's age and total cholesterol. He randomly selects 14 of his female patients and obtains the data presented in the scatter plot below:

Simple Linear Regression
Simple linear regression results:
Dependent Variable: Total Cholesterol
Independent Variable: Age
Total Cholesterol = 151.35365 + 1.3990642 Age
Sample size: 14
R (correlation coefficient) = 0.7178
R-sq = 0.5152521
Parameter estimates:
Parameter Estimate
Intercept 151.35365
Slope 1.3990642

a. Looking at the following scatterplot of the data, what does it tell you about the relationship between Age and Total Cholesterol Level?

b. Find the equation of the least squares line of regression for this data.

c. What does the correlation coefficient tell you about the relationship between the patient's Age and their Total Cholesterol Level?

d. If a patient is 35, predict their Total Cholesterol Level.

e. Are you confident that predictions based on the equation of the least squares line of regression will be quite accurate? Why or why not?

f. What percentage of the variation in the Total Cholesterol Level can be explained by the regression on the patient's Age?

Reference no: EM13216031

Questions Cloud

State the strategic planning process of the organization : How can human resource management be applied to the strategic planning process of the organization?

Which kind of cost is the cost of insurance : Lucy Treasures operates a chain of gift shops. The company pays liability insurance premiums of $2,500 per year for each shop. The managers of each shop are paid a salary of $3,000 per month and all other employees are paid on an hourly basis.

State financial information is reported in real sec filings : The general objective of the project is to provide an opportunity for you to see how financial information is reported in real SEC filings. The primary focus is on ACC 100C topics and how they are reported in the financial statements and footnoted..

Expected standard deviation of portfolio : Calculate the expected value of your portfolio and calculate the expected standard deviation of your portfolio.

Relationship between age and total cholesterol level : What does it tell you about the relationship between Age and Total Cholesterol Level and find the equation of the least squares line of regression for this data.

What was the actual rate paid per direct labour hour : In the accounting department of Frobisher Company, a manufacturing company that produces a popular consumer product. You typically prepare the variance analysis report and present it to the management committee for their review.

Define and describe the difference using examples : do we mean instead convincing our audience by taking a reasonable stance on an issue and supporting our position with appropriate evidence? Define and explain the difference using examples.

Define the intangible section of lewiss balance sheet : A patent was purchased from Craig Company for $4,000,000 on June 1, 2010. Lewis estimated the remaining useful life of the patent to be eight years. The patent was carried in Craig's accounting records at a net book value of $3,500,000 when Craig ..

Determine the optimal level of a new fertilizer : The soybean plants are randomly assigned to the different treatments - determine the optimal level of a new fertilizer on his soybean

User Account

All Pages