Difference in Mean Aggression, Thrill Seeking, and Risk Accepting between Genders, Metropolitan Backgrounds, and Study Modes

Running head: BIOSTATISTICS
Biostatistics
Name of the student
Name of the university
Author note

2BIOSTATISTICS
Table of Contents
Answer 1....................................................................................................................................3
Answer 2....................................................................................................................................4
Answer 3....................................................................................................................................9
Answer 4..................................................................................................................................12
Answer 5..................................................................................................................................15
Answer 6..................................................................................................................................15

3BIOSTATISTICS
Answer 1
Answer a
Statistics of age summary
Statistics
AGE
N Valid 38681
Missing 0
Mean 20.50
Std. Deviation 4.888
Minimum 16
Maximum 59
Age
Table 1 values of age
N Valid 38681
Missing 0
Mean 20.50
Std. Deviation 4.888
Minimum 16
Maximum 59
From the above table, the mean age has been found to be 20.50 years. The standard deviation
of the age of the students is 4.888. The maximum age of the student is found to be 59 years
whereas the youngest one is 16 years old.
Answer b
Statistics
Age_category
N Valid 32800
Missing 5881

4BIOSTATISTICS
Table 2 : Age groups frequency
Age_category
Frequency Percent Valid Percent Cumulative Percent
Valid 18 years 11879 30.7 36.2 36.2
19-21 years 11672 30.2 35.6 71.8
22-25 years 5494 14.2 16.8 88.6
26 years or more 3755 9.7 11.4 100.0
Total 32800 84.8 100.0
Missing System 5881 15.2
Total 38681 100.0
The following table shows the age of the students are grouped in 4 types. The table also
shows that 30.7 percent of the students are 18 years old which is also equal to 11879. 30.2
percent of the students are between 19 to 21 years old and 5494 of the total students are
between the age group of 22 to 25 years old which is also equal to 14.2 percent. Lastly, 9.7
percent of the students are more than 26 years old.
Answer 2
Table 3: Frequency statistics
cohort
Frequency Percent Valid Percent
Cumulative
Percent
Valid 2005 3259 8.4 8.4 8.4
2006 3615 9.3 9.3 17.8
2007 3944 10.2 10.2 28.0
2008 4086 10.6 10.6 38.5
2009 5010 13.0 13.0 51.5
2010 5687 14.7 14.7 66.2
2011 6383 16.5 16.5 82.7
2012 6697 17.3 17.3 100.0