Name _______________________________________ Date __________________ Class __________________
LESSON
11-1
Comparing Data Displayed in Dot Plots
Practice and Problem Solving: D
Answer the questions for each dot plot. The first one is done for you.
15
1. What is the range of the data? ___________
2. Since there is an even number of dots, the median is halfway between
the values of the two middle data points. What is the median?
_______________________________________
3. The mode is the value of the data point that appears the most often.
What is the mode?
_______________________________________
Answer the questions about the two dot plots.
Plot X
Plot Y
4. Which data set has the larger range? Explain.
________________________________________________________________________________________
5. Which data set has the mode with the most equivalent elements,
or dots? Explain.
________________________________________________________________________________________
6. What is the median of Plot X?
________________________________________________________________________________________
7. What is the median of Plot Y?
________________________________________________________________________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
239
Name _______________________________________ Date __________________ Class __________________
LESSON
11-2
Comparing Data Displayed in Box Plots
Reteach
A box plot separates a set of data into four equal parts.
Use the data to create a box plot on the number line: 35, 24, 25, 38, 31,
20, 27
1. Order the data from least to greatest.
2. Find the least value, the greatest value,
and the median.
_______________________________________
________________________________________
3. The lower quartile is the median of the lower half of the data.
The upper quartile is the median of the upper half of the data.
Find the lower and upper quartiles.
Lower quartile: _________________
Upper quartile: _________________
4. Above the number line, plot points for the numbers you found in
Exercises 2 and 3. Draw a box around the quartiles and the median.
Draw a line from the least value to the lower quartile. Draw a line from
the upper quartile to the greatest value.
Use the data to create a box plot: 63, 69, 61, 74, 78, 72, 68, 70, 65
5. Order the data. __________________________________________________
6. Find the least and greatest values, the median, the lower and
upper quartiles.
________________________________________________________________________________________
7. Draw the box plot above the number line.
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
240
Name _______________________________________ Date __________________ Class __________________
11-1 Practice and Problem Solving: D
1. 15
2. 15
3. 15
4. Plot Y; Plot X range is 13  11  2. Plot
Y range is 42  6  36
5. Plot X; 4 values of 11
6. 11
7. 30
11-2 Reteach
1. 20, 24, 25, 27, 31, 35, 38
2. 20, 38, and 27
3. 24, 35
4.
5. 61, 63, 65, 68, 69, 70, 72, 74, 78
6. 61, 78, 69, 64, and 73
7.
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
355