Casio STAT 2 Manual de usuario descargar pdf (Pagina 39)

Activity 7

What Color is Your Car?

Topic Area: Random Sampling, Categorical Data

NCTM Standards:

• Formulate questions that can be addressed with data and collect, organize,

and display relevant data to answer them

• Understand the differences among various kinds of studies and which types

of inferences can legitimately be drawn from each (9-12)

• Understand the meaning of measurement data and categorical data, of

univariate and bivariate data, and the term variable (9-12)

• Select and use appropriate statistical methods to analyze data

• Display and discuss bivariate data where at least one variable is categorical

(9-12)

• Develop and evaluate inferences and predictions that are based on data

• Use simulations to explore the variability of sample statistics from a

known population and to construct sampling distributions (9-12)

• Understand how sample statistics reflect the values of population parameters

and use sampling distributions as the basis for informal inference (9-12)

Objective

Students will be able to create a frequency table of a random sample of car colors in

categories and create a histogram representation of the data.

Introduction

You may want to use the following statistical information to peak your student’s

interest in this activity. You can also personalize this information to your particular

state by doing a search on the Internet for Car Sales Statistics.

"In the year 2004, consumers in the state of Maryland spent over $16 billion in

buying motor vehicles. Can you imagine how much the entire United States spent?

According to JD Power and Associates fourth-quarter sales in 2004, silver was the

most popular car color to purchase, with almost 1/4 of the cars sold in that quarter

being silver. What do you think is the next biggest seller? Black—at 16 %!

The students should be familiar with the following vocabulary:

Categorical data Sampling Frequency Histogram

Getting Started

For this activity you will need the Casio fx-9750G Plus graphing calculator and access

to a large parking area in your school or community. The students should collect color

data from the cars in the parking lot. Have them count how many cars in the parking

lot are each color You may want the students to break up the parking lot into sections

and share the data once the entire parking lot has been counted.

Teaching Notes

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Casio STAT 2 Manual de usuario Pagina 39