i) Find the regression equation for predicting 7-minute screen scores (Y) from the Cognitive series scores (X). ii) What is the value of standard error of estimate?
Identifying individuals with a high risk of Alzheimer’s disease usually involves a long series of cognitive tests. However, researchers have developed a 7-Minute Screen, which is a quick and easy way to accomplish the same goal. The question is whether the 7-Minute Screen is as effective as the complete series of tests. To address this question, Ijuin et al. (2008) administered both tests to a group of patients and compared the results. The following data represent results similar to those obtained in the study.
|
Scores in 7minute-screen (Y) |
Scores in Cognitive series (X) |
|
0 |
11 |
|
4 |
19 |
|
6 |
22 |
|
8 |
20 |
|
5 |
14 |
|
4 |
13 |
i)
Find the regression equation for predicting 7-minute screen scores (Y) from the Cognitive series scores (X).
ii)
What is the value of standard error of estimate?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
