Unit 1 Contents

5. What else can you study about the way people look and the way they dress? Make a list of variables you can study. List two or three values for each variable. Make a table like the one shown.

Numerical variables are variables with values that are numbers. Number of Pairs of Shoes and Height are numerical variables. Categorical variables have values that are not numbers. Kind of Shoe and Shirt Color are examples of categorical variables.

6. On the data table you made for Question 5, write an N beside the numerical variables and a C beside the categorical variables.

Eyelets

In this lab, you will answer a certain question about how the students in your class dress for school using the TIMS Laboratory Method. This method is very much like the method scientists use in their investigations.

Usually, an investigation begins with a question. For this investigation, we ask the question: How many eyelets are on students' shoes in your class?

7. Look around your classroom. Talk with a partner to answer the questions below. Be ready to explain your thinking.
1. What do you think is the most common number of eyelets?
2. How many pairs of shoes have 0 eyelets? 5 eyelets? 8 eyelets? Why do you think so?
3. Estimate the total number of eyelets in the class.