14-1, 14-2 Notes: Frequency Distribution
and Measures of Central Tendency
Range: The difference between the
largest value and the smallest value.
Class interval: The appropriate ← Use the
range of each class…usually a range to
multiple of 5. help
Class limits: The upper and these
lower limit for each class interval.
Class marks: The midpoints of each
Frequency distribution: An organized
table of values that uses class intervals.
Histogram: A bar graph that represents
class intervals and frequency.
Measures of Central Tendency:
▪ arithmetic mean (average)
▪ median (middle value)
▪ mode (most common value)