Probability and Statistics Journal Entries
1. Read the “Fathom” paper given to you and write a thorough response. Do not
summarize the article! Your response should include the following:
Your reaction to the content of the paper.
What would this lesson have looked like had Fathom not been used?
How might it have been different without the technology?
How did Fathom help to make this an effective lesson?
2. Suppose you randomly stopped school-aged children as they entered WalMart
and asked, “What grade are you in?” What type of variable does this question
represent? Explain your reasoning. What are the observational units? Suppose
you gathered the data below. Use this information to create a circle graph.
Grade K 1 2 3 4 5
Number 10 20 45 90 10 5
3. Recently, a researcher asked students to provide the number of minutes they
spent reading the night before. In addition, the students reported their grade
level. The data are reported below. Create a side-by-side stemplot for the data.
What statistical tendency is being exhibited? Why might this statistical tendency
exist? What is a statistical tendency?
Grade 5 5 7 7 7 5 5 7 7 7
Time 28 30 20 20 22 31 33 19 18 16
Grade 5 5 7 7 7 7 5 5 7 7
Time 34 32 24 29 22 18 28 32 17 23
4. Dr. Rivera believes that teachers who were taught as children using manipulative
are more inclined to use manipulatives in their own classrooms. To test this, she
surveyed 50 teachers and asked them the following:
When you were a child, did your teachers use manipulatives in order to
teach mathematical concepts to you?
Do you use manipulatives to teach mathematics concepts to your students?
Of the 40 teachers replying “yes” to question #1, 25 answered “yes” to question #2. Of
the remaining 10 teachers, 6 answered “yes” to question #2.
oUse the data provided to create a two-way table.
oUse the information to create and answer a question that represents marginal
information.
oUse the information to create and answer a question that represents conditional
information.
