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?