How do you compare values on different scales?
You calculate a z-score by subtracting the mean of the population from the score in question, and then dividing the difference by the standard deviation of the population. This means that each variable will have a mean of 0 and a standard deviation of 1, so you can compare your different variables meaningfully.
How do I compare two scale variables in SPSS?
To open the Compare Means procedure, click Analyze > Compare Means > Means. A Dependent List: The continuous numeric variables to be analyzed. You must enter at least one variable in this box before you can run the Compare Means procedure.
How are variables measured on the same scale?
However, since each of the variables is measured on a different scale these means will be extremely difficult to compare. For example, the mean on trust in government might be 4. The mean for alienation might be 10.
How are the four scales of measurement different?
Below is a table that specifies the criteria that distinguishes the four scales of measurement, and the following table provides examples for each scale. In research it is often important to distinguish variables by the supposed or theoretical function they play.
Which is the last scale on the scale of measurement?
Since time is measured precisely with equal intervals, such as one second, one minute, etc., it can be viewed as an interval measure in the abstract. The last scale is ratio. This is just like interval, except that a variable on the ratio scale has a true zero point–a beginning or ending point.
Which is the best way to compare across variables?
The usual way of comparing across variables is to calculate the mean for each variable and to compare the means. However, since each of the variables is measured on a different scale these means will be extremely difficult to compare. For example, the mean on trust in government might be 4.