Understanding Data Boys vs. Girls: Who are the bullies? A friend of yours has wr
ID: 3493220 • Letter: U
Question
Understanding Data
Boys vs. Girls: Who are the bullies? A friend of yours has written a lengthy letter to you in which she describes a problem, and asks for your help. In the town where she lives, a heated controversy has arisen between two groups, girls claiming they are better behaved than the boys and vice versa. A naturalistic observation was conducted during recess session over the course of a week at one of the schools in the community. Children’s aggressive behaviors were recorded (see table below).
Data and Analysis:
Girls
Group A
Boys
Group B
Person
Occurrences of Aggressive Behaviors
Person
Occurrences of Aggressive Behaviors
1
4
1
5
2
7
2
3
3
4
3
3
4
5
4
2
5
8
5
8
6
4
6
9
7
4
7
5
8
7
8
5
9
5
9
5
10
1
10
6
n:
10
10
SUM:
49
51
Mean X:
4.9
5.1
Standard Deviation:
2.02
2.18
Confidence Interval/P value:
.06
Your friend went on to explain that the school psychologist shared the information (above) with the students, and told them that the data do not support the claim that either group is more aggressive than the other. Some of the students (and some of the parents) disagree with that claim. They believe the data show that Girls are better behaved than Boys, since the mean for Girls was lower than the mean for Boys (4.9 versus 5.1, respectively). Since you are studying psychology in school, your friend hopes you can explain to her a number of things concerning this issue regarding intelligence testing.
1. What is the mode and median of each group?
2. What is the range of each group?
3. This study used a sample size of 10 for each group. Hw might the results have changed is the sample size were larger?
4. How is it possible for one group to score higher than the other group, and yet we conclude there is no reliable difference between the groups?
5. Correlational data has been found to support the claim that children who watch violent television will be aggressive children and teens. Can we conclude that aggressive television viewing causes children to be aggressive. Why or why not?
Girls
Group A
Boys
Group B
Person
Occurrences of Aggressive Behaviors
Person
Occurrences of Aggressive Behaviors
1
4
1
5
2
7
2
3
3
4
3
3
4
5
4
2
5
8
5
8
6
4
6
9
7
4
7
5
8
7
8
5
9
5
9
5
10
1
10
6
n:
10
10
SUM:
49
51
Mean X:
4.9
5.1
Standard Deviation:
2.02
2.18
Confidence Interval/P value:
.06
Explanation / Answer
Median is the middle value
Ans 1. Median for girls is 1, 4, 4, 4, 4, 5, 5, 7, 7, 8 ( 10 even no. hence 4+5/2 = 5 hence 4.5 ) 4.5 is the median girls
Median for boys 2,3,3,5,5,5,5,6,8,9 - (5+5/2 = 5) 5 is the median boys
Mode is the number which is repeated often hence for girls - Mode is 4 and for boys mode is 5
Ans 2) Range is the difference between largest and smallest value - Girls 8-1 = 7 ; Boys = 9-2 =7
Ans 3) Increase in no. of sample size makes the project more reliable, it provides more proof for the. Smaller sample size leads us to unsoved problems. Suppose instead of 10 if the sample size was 100 then mean median would have changed
Ans 4) I think due to less sample size we cannot conclude about difference in the group
Ans 5) Yes, aggressive shows leads to agression, more than statistic fact this also an observed fact. Voilence in TV shows gives children more space to think about fights. We often read in news papers about children imitating fight acts , abusive language and causing destructions many of them cross the society limits due to this. even if they raised in good families. Lesser watching of such shows lead to lesser agression.
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