Question

b) Consider the following data on grades received by a student in a particular course. Weight 25% o.zg 3096 o.3c 45% ,45 Tests Grades est145 Test 2 50 Final Exam: 65 Compute the weighted average of grades 3a) In 2015, the median total income of households in Greater Sudbury was $71,687 while the mean income was $89,941. Show in a diagram, the likely shape of income distribution with approximate locations of the mean, median, and mode.

Answer 1

b)

Tests	Weight	Grades
Test 1	0.25	45
Test 2	0.3	50
Final exam	0.45	65
Weighted average of the grades = (.25*45+ .3*50+.45*65)
The weighted average of the grades is 55.5.

3a)