Investigation 2Types of Data
Michelle BallentineKendria Sutherlin
Verra Williams
Quote
It is a mathematical fact that 50% of all doctors graduate in the bottom of their
class.~Unknown
POD
How many times can you subtract 7 from
83? What is left afterwards?
You can subtract it as many times as you want, and it
leaves 76 every time.
83-7 =76
83-7 =76
83-7 =76
83-7 =76
83-7 =76
83-7 =76
OBJECTIVE
• To note the kind of data being collected; that is categorical or numerical
• To use bar graphs to display categorical and numerical data
• To understand how measures of center (median, mode) and spread (range) relate to numerical and categorical data
Problem 2.1
• From the graphs definitions you formed by doing IMOW, complete the following:
A. Write two questions that have categorical data as answers.
B. Write two questions that have numerical data as answers.
Journal Writing
• Problem 2.1 Follow-UP– Is it possible to find the mode of a set of
categorical data? Explain your answer.
• THINK PAIR SHARE
Categorical
Numerical
HOMEWORK
ACE problems 1-8 page 26
What type of graph is it?
What type of graph is it?
What type of graph is it?
Classroom Activity
• Using animal crackers create the following:1.Bar graph or line plot2.Circle graph with the following: fraction, decimal &
percent
Make sure you graph has the following elements:Title, legend, labeled y-axis and x-axis
Materials: Poster board, glue, animal crackers
Problem 2.2
• Decide whether each question below can be answered by using data from the graphs the students created. If a question can be answered, explain why not and tell what additional information you would need to answer the question.
A. Which graph show categorical data, and which graph shows numerical data?
B. What is the total number of pets the students have?
C. What is the greatest number of pets that any student in the class has?
D. How many students are in the class?E. How many students chose cats as
their favorite kind of pet?
F. How many cats do students have as pets?G. What is the mode for the favorite kind of
pet?H. What is the median number of pets
students have?I. What is the range of the numbers of pets
students have?J. Tomas is a student in this class. How
many pets does he have?K. Do the girls have more pets than the
boys?
Journal Writing
• Follow-Up 2.2– Do you think the students surveyed live
in a city, the suburbs, or the country? Explain your answer.
HOMEWORK
ACE Problems #’s: 9-14 pages 26-28
JOURNAL REFLECTIONS
Page 29 Problems 1-3
WORD WALL
• Mode• Range• Average (mean)• Measures of center• Median• Bar graph• Line plot• Categorical• numerical
ACOS
• Standard 1• Standard 2• Standard 10
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