reading quiz 3 Flashcards
The range divided by the number of class intervals in a planned frequency distribution will give you the _____________.
width of the class interval
A relative frequency distribution indicates _____________________________________.
the proportion of the total number of scores that occurs in each interval
A cumulative frequency distribution indicates _____________________________________.
the number of scores that fall below the upper real limit of each class interval
A cumulative percentage distribution indicates _____________________________________.
the percentage of scores that fall below the upper real limit of each interval.
The _____________ is the percentage of scores with values lower than the score in question.
percentile rank of a score
In this chapter, the abbreviation i denotes ___________.
the interval width
Frequency distributions of nominal or ordinal data are customarily plotted using a _______.
bar graph
One way to differentiate a bar graph from a histogram is that ____________________.
the bars touch on a histogram
When a curve is _________, most of the scores occur at the higher values of the X axis and the curve tails off towards the lower end.
negatively skewed
Which type of graph uses points placed at the midpoint of class intervals which indicate the frequencies of each class interval?
Frequency polygon
