9.1 Classwork (1)

Essential Question: How can you tell whether a question is a statistical question?

1 Activity: Using Data to Answer Questions

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a. Find your pulse by counting the number of beats in 10 seconds. Have your partner keep track of the time. Write a rate to describe your result. (ex. 10 seconds/4 beats)

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b. Complete the ratio table. What is your heart rate in beats per minute?

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c. Collect the recorded heart rates (in beats per minute) of the people in your house, including yourself. Compare the heart rates.

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d. MODELING Make a line plot of your data. Then answer the following questions:

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· How many values are in your data set?

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· Do the heart rates cluster around a particular value or values?

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· Are there any peaks or gaps in the data?

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· Are there any unusual heart rates that are far removed from the other values?

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e. Reasoning How would you answer the following question by using only one value? Explain your reasoning.

“What is the heart rate of your family?"

2 Activity: Identifying Types of Questions

a. Answer each question below on your own. Then compare your answers with your Mr. Keeler's answers (in parentheses). For which questions should your answers be the same? For which questions might your answers be different?

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1. What is your shoe size? (10 extra wide)

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2. How many states are in the United States? (50)

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3. How many brothers and sisters do you have? (3)

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4. How many different people have been U.S. presidents? (44)

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5. What is your favorite type of movie? (science fiction)

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6. How tall are you? (72 inches)

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b. CONJECTURE Some of the previous questions are considered statistical questions. Which ones do you think they are?

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Why might the ones you selected be considered statistical?

3 Activity: Analyzing a Question in a Survey

“Do you prefer greasy, salty potato chips or healthy granola bars to be sold in the school’s vending machines?”

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a. Do you think this is a fair question to ask in a survey? Explain.

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b. LOGIC Identify the words in the question that may influence someone’s response. Then explain how you can reword the question.

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9.1 Classwork (1)

Essential Question: How can you tell whether a question is a statistical question?

a. Find your pulse by counting the number of beats in 10 seconds. Have your partner keep track of the time. Write a rate to describe your result. (ex. 10 seconds/4 beats)

b. Complete the ratio table. What is your heart rate in beats per minute?

c. Collect the recorded heart rates (in beats per minute) of the people in your house, including yourself. Compare the heart rates.

d. MODELING Make a line plot of your data. Then answer the following questions:

· How many values are in your data set?

· Do the heart rates cluster around a particular value or values?

· Are there any peaks or gaps in the data?

· Are there any unusual heart rates that are far removed from the other values?

e. Reasoning How would you answer the following question by using only one value? Explain your reasoning.“What is the heart rate of your family?"

“What is the heart rate of your family?"

1. What is your shoe size? (10 extra wide)

2. How many states are in the United States? (50)

3. How many brothers and sisters do you have? (3)

4. How many different people have been U.S. presidents? (44)

5. What is your favorite type of movie? (science fiction)

6. How tall are you? (72 inches)

b. CONJECTURE Some of the previous questions are considered statistical questions. Which ones do you think they are?

Why might the ones you selected be considered statistical?

“Do you prefer greasy, salty potato chips or healthy granola bars to be sold in the school’s vending machines?”

a. Do you think this is a fair question to ask in a survey? Explain.

b. LOGIC Identify the words in the question that may influence someone’s response. Then explain how you can reword the question.

c. How might the results of the survey differ when the student asks the original question and your reworded question in part (b)?

Essential Question: How can you tell whether a question is a statistical question?

a. Find your pulse by counting the number of beats in 10 seconds. Have your partner keep track of the time. Write a rate to describe your result. (ex. 10 seconds/4 beats)

b. Complete the ratio table. What is your heart rate in beats per minute?

c. Collect the recorded heart rates (in beats per minute) of the people in your house, including yourself. Compare the heart rates.

d. MODELING Make a line plot of your data. Then answer the following questions:

· How many values are in your data set?

· Do the heart rates cluster around a particular value or values?

· Are there any peaks or gaps in the data?

· Are there any unusual heart rates that are far removed from the other values?

e. Reasoning How would you answer the following question by using only one value? Explain your reasoning.“What is the heart rate of your family?"

“What is the heart rate of your family?"

1. What is your shoe size? (10 extra wide)

2. How many states are in the United States? (50)

3. How many brothers and sisters do you have? (3)

4. How many different people have been U.S. presidents? (44)

5. What is your favorite type of movie? (science fiction)

6. How tall are you? (72 inches)

b. CONJECTURE Some of the previous questions are considered statistical questions. Which ones do you think they are?

Why might the ones you selected be considered statistical?

“Do you prefer greasy, salty potato chips or healthy granola bars to be sold in the school’s vending machines?”

a. Do you think this is a fair question to ask in a survey? Explain.

b. LOGIC Identify the words in the question that may influence someone’s response. Then explain how you can reword the question.

c. How might the results of the survey differ when the student asks the original question and your reworded question in part (b)?

e. Reasoning How would you answer the following question by using only one value? Explain your reasoning.

“What is the heart rate of your family?"

e. Reasoning How would you answer the following question by using only one value? Explain your reasoning.

“What is the heart rate of your family?"