Which of the following statements is false?
1) There is almost always a slight relationship between two variables, or a difference between two groups, and if you collect enough data, you will find it.
2) There is never a relationship between two variables or a difference between two groups, no matter how much data you collect.
3) There is sometimes a relationship between two variables, or a difference between two groups, but it is difficult to find with limited data.
4) There is always a strong relationship between two variables, or a difference between two groups, regardless of the amount of data collected.