⚡
INTERACTIVE — FIT THE LINE
| Match # | Time (min) | Distance (cm) |
|---|---|---|
| 1 | 1 | 15 |
| 2 | 2 | 28 |
| 3 | 3 | 38 |
| 4 | 4 | 55 |
| 5 | 5 | 62 |
| 6 | 6 | 80 |
Mean Distance
46.3
Range
65
Total Residual
--
Smaller total residual is better — adjust the sliders to minimize.
RESIDUAL
📖
LEARN — CLICK THROUGH THE STEPS
| Match | Distance |
|---|---|
| 1 | 45 |
| 2 | 52 |
| 3 | 48 |
Data = measurements from your matches.
45
+
52
+
48
= 145
145 ÷ 3 = 48.3
Mean = the average. Add them up, divide by count.
52
Max
45
Min
7
Range
Range = biggest minus smallest.
· · ·
· · ·
· · ·
Plot the data — look for a pattern in the scatter.
Draw a line through the dots.
↕ Measure each gap (actual − predicted).
↕ Measure each gap (actual − predicted).
Draw a prediction line. How close are the dots?
Residual = actual − predicted
RESIDUAL
Residual = actual − predicted. Smaller is better.
🎯
TRY IT — YOUR TURN
Four match distances: 10, 14, 12, 16
Mean
Add them up, divide by 4
Range
Biggest minus smallest