I need Stat Practice exercise.

Chapter 3 Question 4

A third-grade teacher wants to improve her students’ level of engagement during group discussions and instruction. She keeps track of each of the 15 third graders’ number of responses every day for 1 week, and the data are available as Chapter 4 Data Set 2. Use SPSS to create a bar chart with one bar for each day (and warning—this may be a toughie).

Chapter 4 Data Set 2

Monday	Tuesday	Wednesday	Thursday	Friday
12	17	10	15	20
	11	10
				10

				11
10				15
13	12			10
22	16	18	15	20



10				12

15	12	10		11
				10

Chapter 5 Question 6. Use SPSS to determine the correlation between hours of studying and GPA for these honor students. Why is the correlation so low?

Hours of Studying	GPA
23	3.95
12	3.90
15	4.00
14	3.76
16	3.97
21	3.89
14	3.66
11	3.91
18	3.80
	3.89

Chapter 6 Question 4

How can a test be reliable and not valid? Provide an example. Why is a test not valid unless it is reliable?