A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial expression and/ or gender. Some photos were of males; others were of females, and within each of those groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the same photo set. This means each participant judged every condition – male smiling; male neutral; female smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant:   Smiling pictures Neutral pictures   Male photos Female photos Male photos Female photos Participant A 8.7 8.2 8.5 9.0 Participant B 9.1 8.0 9.0 8.5 Participant C 8.3 9.0 8.3 8.4 Participant D 9.5 8.8 9.4 9.2 Participant E 9.0 8.2 8.9 8.8 Participant F 7.7 7.0 7.8 7.5 Participant G 8.6 8.8 8.5 8.0 Participant H 8.5 7.3 8.4 7.7 Participant I 9.1 6.5 9.2 6.5 Participant J 9.2 8.0 9.1 8.1 Participant K 8.2 8.1 8.1 8.3 Participant L 8.0 7.5 7.9 7.9

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial expression and/ or gender. Some photos were of males; others were of females, and within each of those groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the same photo set. This means each participant judged every condition – male smiling; male neutral; female smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant:

 

Smiling pictures

Neutral pictures

 

Male photos

Female photos

Male photos

Female photos

Participant A

8.7

8.2

8.5

9.0

Participant B

9.1

8.0

9.0

8.5

Participant C

8.3

9.0

8.3

8.4

Participant D

9.5

8.8

9.4

9.2

Participant E

9.0

8.2

8.9

8.8

Participant F

7.7

7.0

7.8

7.5

Participant G

8.6

8.8

8.5

8.0

Participant H

8.5

7.3

8.4

7.7

Participant I

9.1

6.5

9.2

6.5

Participant J

9.2

8.0

9.1

8.1

Participant K

8.2

8.1

8.1

8.3

Participant L

8.0

7.5

7.9

7.9

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