1. Using the data in the table below, test if there is a relationship between gender and attending school.
Gender
|
Attend School
|
Male
|
Female
|
|
|
Full time
|
224
|
231
|
455
|
|
Pan time
|
28
|
56
|
84
|
|
No school
|
729
|
795
|
1524
|
|
|
981
|
1082
|
2063
|
Barbados Statistical Service - 2010 Population and Housing Census
2. To estimate the average length of time spent in Barbados by long stay tourists, 150 immigration records were reviewed. The sample produced a mean stay of 8.8 days, with a standard deviation of 6 days.
3 The table below shows the family income (in 81000s) and average grades for 10 students.
|
Family
Income
|
Student's
Average Grade
|
|
31
|
72
|
|
42
|
81
|
|
44
|
78
|
|
49
|
85
|
|
56
|
80
|
|
58
|
91
|
|
70
|
94
|
|
90
|
83
|
|
92
|
97
|
|
95
|
89
|
a) Find and interpret r and r2.
b) What is the dependent variable?
c) Find the least squares regression line.
d) If a student's family income was 174, what would he their average grade?
3 The table below shows the family income (in $1000s) and average grades for 10 students.
|
Family
Income
|
Student's
Average Grade
|
|
31
|
72
|
|
42
|
81
|
|
44
|
78
|
|
49
|
85
|
|
56
|
80
|
|
58
|
91
|
|
70
|
94
|
|
90
|
83
|
|
92
|
97
|
|
95
|
89
|
|
a) Find and interpret r and r'.
b) What is the dependent variable'?
c) Find the least squares regression line.
|
|
a) If a student's family income was 174, what would he their average grade?
|