1. 6.5 Applying Averages Obj: To calculate average and solve problems with average Find Average = Sum # of items

2. Example 1 Find the average: 95, 95, 95, 75 95 95 95 4/360 = 90% 95 4/360 = 90% 95 95 + 75 + 75 360 360

3. Midpoints A ____________ B ½ way or midpoint Midpoint= A+B 2 Because you have 2 points.

4. Example 2 Find the midpoint 14 -6 Midpoint = 8 = 4 2

5. Example 3 Cody wants a 90 for the marking period. If his grades are 75, 85 and 100- what must he get on the 4 th test? Cody wants a 90 for the marking period. If his grades are 75, 85 and 100- what must he get on the 4 th test? Let X = 4 th Test Let X = 4 th Test Average= Sum Number 4 [ 90= 75+85+100+X] 4 Number 4 [ 90= 75+85+100+X] 4 4 360=260X 360=260X 200 260 200 260 90 = 260+X 90x4 4 X=100