a researcher is studying psychological factors in academic achievement among teenage girls. one variable she is particularly interested in is perseverance. what information does a measure of variability for the variable perseverance convey? check all that apply. how consistent are the values for perseverance among teenage girls? what is the central tendency for the variable perseverance among teenage girls? what is the most common value for the variable perseverance among teenage girls? do all teenage girls have the same amount of perseverance?