What is regression to the mean

Reference no: EM131323488

1. What are the most important threats to validity that occur in quasi experimental research designs when the research is conducted over a period of time? What techniques can be used to minimize these potential interpretive problems?

2. What is regression to the mean, and why is it a threat to the validity of research designs in which random assignment has not been used?

Reference no: EM131323488

Questions Cloud

Masses of the products that are formed by reacting : Assuming 100% yield, what are the masses of the products that are formed by reacting 2.3g of C2H6(g) with excess O2(g) in the reaction C2H6(g) + O2(g)--->CO(g) +H2O(g).

Ideal gas equation and the real gas equation : Using the following data, calculate the pressure of 100.0mol of CO(g) in a 40.0L container at 25 degrees Celcius using both the ideal gas equation and the real gas equation. Why are these two values so different? (aCO=147.2L2kPa mol-2; bCO=0.0395L..

Ideal gas equation and the real gas equation : Using the following data, calculate the pressure of 1.00mol of Ar(g) in a 40.0L container at 25 degrees Celcius using both the ideal gas equation and the real gas equation. Why are these two values so different? (aAr=136.3L2kPa mol-2; bAr=0.0322L ..

Determine the fixed rates in dollars and in pounds : Determine the appropriate pound notional principal. Use this result in each of the remaining questions.- Determine the fixed rates in dollars and in pounds.

What is regression to the mean : What is regression to the mean, and why is it a threat to the validity of research designs in which random assignment has not been used?

Design a tube bank that will increase the temperature : MECH 3330: Design a tube bank that will increase the temperature of a 1200 CFM flow of air from 35°F to 100°F. Assume a constant pressure of 1atm. Each tube will have a diameter of 0.5in and a length of 24in. The tube configuration must fit in an ..

Project management triple constraint : Define the project management triple constraint and explain its significance to project managers. As an IT project manager, how do these impact your projects?

What is the character of the gain realized : What are the tax consequences of this exchange to Barb - What are the tax consequences of this exchange to Dan and What is the character of the gain realized? Cite to authority as you discuss it.

Description of what it means to be a nursing professional : A clearly articulated statement of your area of interest and career goals (Nurse Informatics Specialist). A description of what it means to be a nursing professional. How would this influence how you dress, speak, and act

User Account

All Pages