State whether each of the following describes a study measuring qualitative or quantitative data. • A researcher distributes open-ended questions to participants asking how they feel when they are in love. • A researcher records the blood-pressure of participants during a task meant to reduce stress. • A psychologist interested in drug addiction injects rats with an attention-inducing drug and then measures the rate of level pressing. • A witness to a crime gives a description of the suspect to the police. 2. In December 2009, a CBS News Poll asked 1,048 Americans to grade the U.S. public school system. In the poll, they asked, “How would you grade the U.S. on the quality of the public schools in this country?” The results are described in the table below, with A being the best grade and F being the worst grade. Grade % A 7 B 23 C 32 D 26 F 12 • What is the sample size for this poll? • Based on the percentages given in the table, how many people gave the U.S. public school system a C. 3. The following graph summarizes the number of nights per week a sample of college students spent studying • How many students were observed in this study? • How many students studied 3 nights per week? • How many students studied at least 3 nights per week?
1. State whether each of the following describes a study measuring qualitative or quantitative data.
• A researcher distributes open-ended questions to participants asking how they feel when they are in love.
• A researcher records the blood-pressure of participants during a task meant to reduce stress.
• A psychologist interested in drug addiction injects rats with an attention-inducing drug and then measures the rate of level pressing.
• A witness to a crime gives a description of the suspect to the police.
2. In December 2009, a CBS News Poll asked 1,048 Americans to grade the U.S. public school system. In the poll, they asked, “How would you grade the U.S. on the quality of the public schools in this country?” The results are described in the table below, with A being the best grade and F being the worst grade.
| Grade | % |
| A | 7 |
| B | 23 |
| C | 32 |
| D | 26 |
| F | 12 |
• What is the sample size for this poll?
• Based on the percentages given in the table, how many people gave the U.S. public school system a C.
3. The following graph summarizes the number of nights per week a sample of college students spent studying
• How many students were observed in this study?
• How many students studied 3 nights per week?
• How many students studied at least 3 nights per week?
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