SCATTER PLOT PRACTICE
NAME: _____________________________
Station #1
The following table shows the number hours of sleep a group of 8th grade students got the night before a test
and each student’s score as a percentage.
MATH SCORE VERSUS HOURS OF SLEEP
Hours
9
of Sleep
Test
93
Score
4
7
6
6
8
9
8
5
7
8
10
71
84
77
82
93
91
100
70
83
90
72
1.
On the graph to the right, create a scatter plot from the data.
You must have a title, x- and y-axis labels, even-numbered
intervals, correctly plotted points, and a line of best fit.
2.
What type of correlation does the data best represent?
___________________________________________________
3.
Is there a relationship between hours of sleep and the math test
score? If so, write a sentence to explain the relationship.
___________________________________________________
___________________________________________________
4.
Can a student who gets 8 hours of sleep expect to score a 100?
Explain.
___________________________________________________
___________________________________________________
5.
Based on your trend line, what is a student who gets 12 hours
of sleep expected to make on his math test? Explain why this
isn’t possible.
___________________________________________________
___________________________________________________
6.
Did your graph contain an outlier? If so, what is it? _________
Explain why this point is an outlier, and what may have
happened to cause the point to be an outlier.
___________________________________________________
___________________________________________________
___________________________________________________
SCATTER PLOT PRACTICE
NAME: _____________________________
Station #2
The following table shows the number of siblings and the number of pets a person has in their family.
SIBLINGS VERSUS PETS
Siblings
2
2
2
0
3
1
3
7
1
3
6
2
Pets
4
1
12
2
1
1
1
4
0
2
0
2
1.
On the graph to the right, create a scatter plot from the data.
You must have a title, x- and y-axis labels, even-numbered
intervals, correctly plotted points, and a line of best fit.
2.
What type of correlation does the data best represent?
___________________________________________________
3.
Is there a relationship between the number of siblings and the
number of pets are person may have? If so, write a sentence to
explain the relationship.
___________________________________________________
___________________________________________________
4.
Did your graph contain an outlier? If so, what is it? _________
Explain why this point is an outlier, and what may have
happened to cause the point to be an outlier.
___________________________________________________
5.
Determine if each statement is true or false.
a.)
___________________________________________________
b.)
___________________________________________________
c.)
d.)
An outlier exists a the point representing a person
with 4 pets. ________
The person with least pets also has the most siblings.
____________
There is a positive linear association between the
number of siblings and the number of pets. __________
The person with the second most number of siblings
has no pets. _______________
SCATTER PLOT STATIONS
NAME: _____________________________
Station #3
An earthquake hit Parkfield, CA in September of 2004. The earthquake had a magnitude of 6.0. The magnitude describes the
size of the earthquake at the source. The table below describes the earthquake’s intensity – the effects of the earth’s shaking –
at 12 different locations away from Parkfield, CA.
DISTANCE FROM EPICENTER VS. INTENSITY
Distance
(km)
89
35
934
Intensity
4
5
1
47 1,431
99
497
2,019
482
778
5
4
2
1
3
3
1
401 294
3
1.
On the graph to the right, create a scatter plot from the data.
You must have a title, x- and y-axis labels, even-numbered
intervals, correctly plotted points, and a line of best fit.
2.
What type of correlation does the data best represent?
4
___________________________________________________
3.
Is there a relationship between the epicenter and intensity? If
so, write a sentence to explain the relationship.
___________________________________________________
___________________________________________________
4.
___________________________________________________
Do you think it would cost more or less to insure customers in
the Parkfield region against earthquake damae than it would
customers in places where there are no recorded earthquakes?
Why?
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
If a city is 130 kilometers from the epicenter, predict the
amount of intensity. Explain.
___________________________________________________
6.
___________________________________________________
SCATTER PLOT STATIONS
NAME: _____________________________
Station #4
The Olympic Games Men’s 110-Meter Hurdles event is a popular event in the Olympics. The table below shows the winning
time for each of the Olympic Games since 1952.
Year
1952
1956
1960
1964
4968
1972
1976
1980
1984
1988
1992
1996
2000
2004
Winning
Time (sec)
YEAR VERSUS WINNING TIME
13.7
13.5
13.8
13.6
13.3
13.25
13.3
13.4
13.2
13.0
13.1
12.95
13.0
12.9
1.
On the graph to the right, create a scatter plot from the data.
You must have a title, x- and y-axis labels, even-numbered
intervals, correctly plotted points, and a line of best fit.
2.
What type of correlation does the data best represent?
___________________________________________________
3.
Is there a relationship between the year and the winning time?
If so, write a sentence to explain the relationship.
___________________________________________________
___________________________________________________
4.
6.
Do you think the winning time is decreasing through the years?
Why?
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
5.
Why do the years given increase by four each time?
___________________________________________________
Do you think the winning time can continue to decrease?
Explain.
___________________________________________________
7.
___________________________________________________
Predict what the winning time will be in the 2016 Olympics.
Explain your answer.
___________________________________________________
___________________________________________________
SCATTER PLOT STATIONS
NAME: _____________________________