Researchers often wish to develop scales. that respond to a single characteristic. â Determine what features are most important when classifying a group of items. â Generate \factor scores representing values of the underlying constructs for use in other analyses.
Report Abuse. yes a square is always a parallelogram because it has to pairs of parallel lines and that's the rules to a parallelogram but a parallelogram is not always a square because to be a square it has to have two pairs of parallel lines and all the angles have to be 90 degrees. Lily R Â· 6 years ago. Thumbs up.
A parallelogram has 2 sets of parallel sides. The opposite sides  are equal in length and opposite angles are equal. Examples of  parallelograms are squares, rectangles and â¦rhombuses. You can find  the perimeter of a parallelogram by doubling the base+side length.