INFERENTIAL STATISTICS FOR DECISION MAKING
Quiz-3
Chapter 5 Questions
Answer the following questions using the Data Set 5-3
Data Set 5-3
-2
-1
0
2
6
1. What is the deviation score of the raw score of 6 in Data Set 5-3?
2. What is the deviation score of the raw score of -1 in Data Set 5-3?
3. What is the z-score of the raw score of -2 in Data Set 5-3?
4. What is the z-score of the raw score of 0 in Data Set 5-3?
Chapter-6 Questions
Answer the following questions using the Data Set 6-1
Data Set 6-1
The correlation between the number of PhDs and the number of mules in a state used to be approximately -.90. Accept the following simplified summary data.
PhDs Mules
Mean 40 200
Standard Deviation 15 50
In questions based on Data Set 6-1, the task is to predict the number of mules for a state, given the number of PhDs.
5. Look at Data Set 6-1. For a state with 60 PhDs what would be the predicted number of mules?
6. What would be the b coefficient in Data Set 6-1?
7. Look at Data Set 6-1. For a state with no PhDs what is the predicted number of mules?