Box Plot Practice
Name___________________
1. Draw a box plot for the data set of ages: 12, 14, 14, 12, 16, 13, 11, 14, 18
A.
B.
C.
D.
E.
F.
G.
H.
Order the set of data 11,12,12,13,14,14,14,16,18
Identify the minimum point 11
Identify the max point 18
Identify the median (if two points are in the middle, add them together and divide by 2) 14
Identify the median point between the min and the median – this is the lower quartile 12
Identify the median point between the median and the max – this is the upper quartile 15
Now draw a number line and place these points above the line where they belong.
Identify the data as symmetrical or skewed. skewed
Graph should have title and labels
2.Draw a box plot for the data set: 40,45,95,100,65,85,75,80,85,75
A.
B.
C.
D.
E.
F.
G.
H.
Order the set of data 40,45,65,75,75,80,85,85,95,100
Identify the minimum point 40
Identify the max point 100
Identify the median (if two points are in the middle, add them together and divide by 2) 77.5
Identify the median point between the min and the median – this is the lower quartile 65
Identify the median point between the median and the max – this is the upper quartile 85
Now draw a number line and place these points above the line where they belong.
Identify the data as symmetrical or skewed. skewed
Graph should have a title and label
3. The box-and-whisker plot shows the weekly practice hours of two baseball teams. Which of the
following statements are true?
A.
B.
C.
D.
The median practice hours for Team B is greater than Team A.
The median practice hours are same for both the teams.
Upper quartile for Team A is less than the median of Team B
The median practice hours for Team A is greater than Team B.
4. A movie theater recorded the number of tickets sold daily for a popular movie during the month of
June. The box-and-whisker plot shown below represents the data for the number of tickets sold, in
hundreds.
Which conclusion can be made using this plot?
A. The second quartile is 300.
B. The mean of the attendance is 400.
C. The range of the attendance is 300 to 600.
D. Twenty-five percent of the attendance is between 300 and 400.