Internal Code: MAS805
Statistics Assignment:
An educational researcher carried out a study into standardised examinations for high school students. 150 Year 7 students were randomly selected from schools across Australia in 2011 and various information was recorded on these students over a four year period. Some of the variables recorded were:
Variable Description
ID Student ID
School_Type School type attended by students
1 = Government
2 = Catholic 3 = Independent
School_Enrolment School enrolment of school attended by student:
1 = Co-educational, 2 = Girls, 3 = Boys
Maths_Year7 Student’s mark on a standardised Mathematics exam in Year 7
Maths_Year11 Student’s mark on a standardised Mathematics exam in Year 11
English_Year7 Student’s mark on a standardised English exam in Year 7
English_Year11 Student’s mark on a standardised English exam in Year 11
The data are stored in the Excel file: ExamMarks.xlsx which is on iLearn. Use this data file to
complete Question 2.
Research Questions for Q2:
a. Amongst students attending boys only schools, did the average marks on standardised exams change significantly between Years 7 and 11?
b. Amongst Year 11 students, were the average marks on standardised exams for students at Government schools different to the average marks for students at Independent schools?
c. Amongst Year 7 students at were the average marks on standardised exams for for students at boys only schools different to the average marks for students at girls only schools?