The table shows the speeds, in miles per hour (mph), of 20 cars passing a speed camera.
| 35 | 47 | 53 | 68 | 41 |
| 42 | 48 | 55 | 45 | 41 |
| 39 | 52 | 38 | 64 | 47 |
| 44 | 43 | 50 | 61 | 59 |
Draw an ordered stem and leaf diagram to show this information. You must include a key.
Work out the median speed.
Another car is recorded traveling at 70 mph70\text{ mph}70 mph. James says: "This means the median speed will stay the same." Is James correct? You must explain your answer.
