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Central Tendency and
Box-and-whiskers Review
In order
to better compare sets of
data, it is often necessary
to analyze the data using a
variety of statistical
tools.
In this
activity your students will
construct a box-and-whiskers
graph with several sets
(boxes) displayed, and they
will also use values of
central tendency to allow a
more complete analysis of
the data.
Standards
Grades
6-8, Data Analysis and
Probability Select
and use appropriate
statistical methods to
analyze data:
-
Find, use, and interpret
measures of center and
spread, including mean
and interquartile range.
-
Discuss and understand
the correspondence
between data sets and
their graphical
representations,
especially histograms,
stem-and-leaf plots, box
plots, and scatterplots.
Data
The
following data are
basketball scores for three
players in the last 10 home
games.
|
Dave |
Adam |
Laura |
|
22 |
15 |
19 |
|
19 |
18 |
20 |
|
15 |
15 |
7 |
|
18 |
12 |
16 |
|
9 |
11 |
12 |
|
5 |
13 |
20 |
|
10 |
12 |
17 |
|
8 |
11 |
14 |
|
14 |
14 |
11 |
|
20 |
13 |
9 |
Procedure:
-
Construct a box-and-whiskers
plot for each player
and his or her scores.
-
Identify the mean, median,
and mode for each of the
four sets of data.
-
Answer the analysis
questions that follow.
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