PSYC 243 SPSS EXERCISE FALL â??13 In a study of memory, it is known that participants score an avera

PSYC 243
SPSS EXERCISE
FALL ‘13

In a study of memory, it
is known that participants score an average of 65 without the use of
special recall training. The data for participants who received the
special recall training are listed below. Determine whether the average
test score with the recall training is significantly different than the
average score of participants without the recall training.

Scores
with recall training: 85, 75, 60, 90, 65, 75, 90, 80, 75, 65

To measure the
relationship between amount of sleep and test performance, a psychologist
obtains a sample of n = 10 college students from an introductory research
methods course. The students are asked to record the number of hours they
slept the night before they are administered an exam in the lab. In the
lab, the psychologist collects the data concerning how many hours each
student slept the night before. In addition, the psychologist then
administers an exam and records participants test scores. Determine
whether there is a significant correlation between these two variables.

Student

#
of hours slept

Exam
Score

A

9

90

B

8.5

89

C

7.5

81

D

6

66

E

7

74

F

8

88

G

6

82

H

8.5

96

I

6.5

64

J

7

70

3. In order to determine if a
new computer based method of learning math is more effective than traditional
classroom teaching, a psychologist randomly assigned ten children to each of
two groups. One group was given training in how to solve math problems with the
new computer-based method, while the other group received traditional classroom
instruction. All children were then administered the same math test. Determine
whether there is a statistically significant difference between the two means. The
scores generated by each participant can be found in the chart below.

Computer
method scores

85

60

74

55

90

66

62

78

59

81

Traditional
method scores

90

60

58

72

82

78

59

71

60

70

Below are the data from
a within-subjects experiment involving perceptual ability. The scores are
number items perceived on a perceptual ability task both before and after
a sensitivity treatment. Determine
whether there is a significant difference between the ‘before treatment’
and ‘after treatment’ scores.

Participant

Before Treatment

After Treatment

A

3

4

B

4

4

C

6

5

D

2

4

E

1

3

F

3

5

G

2

2

H

3

1

I

5

6

J

4

6

An experiment is done to
determine the importance of educational television shows and reading time
with peers on the development of phonological awareness in young children.
The experimenters manipulate the variables so that there are four
conditions—educational television, but no peer reading time (TV), educational
television as well as peer reading time (TV+PR), no educational television,
but early peer reading experience (PR), and no educational television and
no early peer reading experience (CONTROL). After one year of the experiment, phonological
awareness scores (on a scale of 1-10, 1 being lowest score of phonological
awareness, 10 being the highest score of phonological awareness) for the
children are collected. The data from each group are listed below.

TV

TV+PR

PR

CONTROL

4

8

9

2

3

5

10

2

5

9

8

3

4

10

9

1

6

6

9

1

2

9

6

4

2

10

9

2

3

7

8

1

4

10

5

3

3

9

9

1

A social psychologist is
interested in the amount of hand gestures people when they speak to
others. This psychologist believes
that, within one particular culture, there is variation in hand gestures
used based on the area that a person is from. To test this hypothesis, the
psychologist observes 8 people from 3 different areas and measures how many
hand gestures they use while speaking to another person for a designated
amount of time while speaking about one particular topic. The data are
below. Determine if there is a
significant difference between any of the groups, and if there is, where
the difference lies.

Area A

Area B

Area C

12

10

16

22

17

15

19

15

11

18

19

12

23

25

10

16

18

13

19

19

12

20

21

9