Investigation:How many students from each year (9 to 13) own a cell phone?
| Year | Number of Students |
|---|---|
| 9 | 161 |
| 10 | 151 |
| 11 | 46 |
| 12 | 41 |
| 13 | 35 |
From the data we can see that the younger people have more phone usage compared to the older people. However, the data has a different amount of people for each year group, this makes the data invalid for making any conclusions. This could be fixed by either making the data an average/percent of how many people use cellphones in each year group, or change the data so their are a equal amount of people from each year group. Because of this question 1-6 are also invalid for making any conclusions.