Question

example 1 construct a scatter plot
luciana analyzes the data collected to
determine how long after posting a
new blog her new home page received
its maximum number of new views.
her data are presented in the table.
how can she determine whether there
is a relationship between the time after
posting and the number of new views?
look for relationships
can you see a pattern between
the time after posting and the
number of new views?
step 1 draw a scatter plot. a scatter plot is a graph
in the coordinate plane that shows the relationship
between two sets of data.
look at the data values to
determine the scales for
the x - and y - axes.
step 2 plot the ordered pairs (time after posting,
number of new views) on the graph.
luciana can use a scatter plot to determine whether
there is a relationship between the two data sets.
try it!
luciana collects data about the number of entries and the
ages of the subscribers who enter the concert giveaway.
the point that represents the data in the fourth column has
coordinates (□□).
convince me! explain how luciana would choose scales for the x - axis and y - axis.
220 4 - 1 construct and interpret scatter plots

Explanation:

Step1: Identify the x - value (age)

The fourth column in the "Age (years)" row has a value of 12.

Step2: Identify the y - value (number of entries)

The fourth column in the "Number of Entries" row has a value of 9.

Answer:

(12,9)