If a frequency distribution has some extreme scores, then the appropriate measure of variability will be _______

The appropriate measure of variability for a frequency distribution with extreme scores is the Quartile Deviation 

Key PointsThe Quartile Deviation is a robust measure of variability, which means that it is not as sensitive to extreme scores as other measures of variability, such as the standard deviation. This makes it a good choice for use with frequency distributions that have extreme scores.

Additional Information The other options are not as appropriate for use with frequency distributions that have extreme scores. The average deviation is also sensitive to extreme scores, and it can be difficult to interpret. The standard deviation is a more robust measure of variability than the range or average deviation, but it is still sensitive to extreme scores.