Lesson 2

Question 1

frequency table

Answer 1

a simple representation, in organized tabular form, of raw data

Question 2

histogram

Answer 2

a type of graph that represents a data set visually, using continuous number ranges; it is similar but not identical to a bar chart (which may not use continuous ranges)

Question 3

frequency polygon

Answer 3

a type of line graph derived from plotting the points of a histogram’s “bins” and connecting them

Question 4

shape

Answer 4

the visual contour of a frequency polygon or a smoothed-out form of it, using curves

Question 5

center

Answer 5

the midpoint of a shape
spread: the extent to which the shape continues to either side of the center: symmetrically, skewed-left, or skewed-right

Question 6

density curves

Answer 6

frequency polygons that have been rounded into a continuous curve or curves rather than being shown as a series of connected points