A(n) is conducted in order to determine whether there are meaningful differences between two groups in a study.

The correct answer is Statistical Analysis. If you conduct it, you can see what the statistical data is for the two groups and this points out to how similar or different they are because statistics are often about objective numbers regarding a group or an occurrence.

You don’t list any options but the one that frets overspending and the consequences of that.

Everyone’s hair grows differently.