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- Introduction to Regression Analysis
- Predicting a Value
- A Regression Analysis Example
- A Regression Analysis Example, continued
- Calculating the Y-Intercept
- Prediction Using the Resulting Equation
- Given the following creatinine standards:mg/dLAbsorbance30.1460.2690.38What is the correct form of the regression line?
- Given the data and linear regression line you calculated on the previous question, what is the expected absorbance of a 10 mg/dL sample?
- True or false: you should make a scatterplot of your data before you calculate the regression line.
- A scatterplot of the data below is shown on the right, confirming a linear relationship. Given the following data, calculate the regression line.xy2 9...
- Introduction to Least Squares Method of Best Fit
- Introduction to Least Squares Method
- The Least Squares Line
- Standard Error of Estimate
- Calculate the sum of squares for line B. To do this, you must calculate , the difference y- , and the squared difference (y-)2 for each point, and the...
- Using the sum of squares from the previous question (440.25), calculate the Standard Error of Estimate for line B to the nearest thousandth using the ...
- Least Squares Calculation
- Determining the Least Squares Line
- Formulae for Determining the Slope and Intercept
- Calculating the Standard Error of Estimate
- Correlation Coefficient
- Example Regression Line Calculation
- Using the Least Squares Formulae
- Determining Se and r2
- Data for Questions
- Using the data, calculate the total of the (x-)(y-) values. What is the total (rounded to the nearest whole number)?
- Using the same data, calculate the total of the (x-)2 values. What is the total?The average of x is 20 and the average of y is 23.8.
- Using the formulas below and the information from the previous questions (shown again in the table below), what are the slope and y-intercept of the l...
- What is the Standard Error of Estimate for this regression line, using the shortcut form of the equation shown below:a = 2.4b = 1.070= 23.8
- Calculation of Confidence Intervals for Least Squares
Level of instruction: Intermediate
Intended audience: This course is appropriate for laboratory professionals, and for students in clinical laboratory science programs who want a review of the statistics that are analyzed for assessment of quality control.
Author Information: Mary Ann Fiene, MT(ASCP), has authored several articles on the subjects of curriculum development, competency evaluation, and job restructuring. Her articles have appeared in the Journal of Allied Health, American Journal of Medical Technology (now published as Clinical Laboratory Science), and Medical Laboratory Observer. Ms. Fiene was affiliated as an educator with the Kettering Medical Center School of Medical Technology.
Alan Reichert, PhD, is a professor of finance at Cleveland State University in Ohio.
Reviewer Information: Alexandru Casapu, MBA, MLS(ASCP)CM, PBTCM has over 20 years of experience as a medical laboratory scientist, section supervisor, and laboratory manager. He is the former Director of Clinical Laboratory Technology Program at Georgia Piedmont Technical College. He is currently a Program Director at MediaLab, Inc. Alexandru holds BS degrees in Biology and Medical Technology from Clark Atlanta University and an MBA from the University of Georgia.
About the Course: This course is part of a series of courses adapted for the web by MediaLab Inc. under license from Educational Materials for Health Professionals Inc. Dayton OH, 45420. Copyright EMHP. The course was reviewed and revised in 2018.
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