365717809627768991.pdf - Guided Reading Mod 6 Correlation and Experimentation pgs:46-55 AP Psych/Imbesi NAME PER Before beginning the module take a

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Unformatted text preview: Guided Reading: Mod. 6 Correlation and Experimentation pgs:46-55 AP Psych/Imbesi NAME: ___________________________________________________ PER: ________ Before beginning the module, take a moment to read each of the following terms you will encounter. You may wish to pretend these terms do not exist, but they do & you are excepted to know them. KEY TERMS: PART I: 6.1 1. correlation placebo effect experimental group random assignment illusory correlation correlation coefficient independent variable double-blind procedure experiment dependent variable control group validity scatterplot confounding variable Answer the following questions/prompts. List two examples of a positive correlation between two variables. The first example should be from the text and the second example should be from your life. As the height in centimeters goes up, the height in inches goes up. As the amount of sleep I goes goes up, my productivity goes up. 2. List two examples of a negative correlation between two variables. The first example should be from the text and the second example should be from your life. As height increases, the top-of-head to ceiling distances goes down. As my class levels increase, my free time decreases. 3. How is a scatterplot used to represent correlations between two variables? Scatter plots show how much one variable is affected by another by plotting them against each other. The relationship between two variables is called their correlation . 4. The text refers to a New York Times headline that states U.S. counties with high gun ownership rates tend to have high murder rates. a. Is this a positive or negative correlation? positive b. Why is the correlation positive or negative? the correlation is positive because as gun ownership rates rise, murder rates also simultaneously rise 5. Draw a scatterplot below that would support your answer in #4. Be sure to correctly label the x- and y-axis. murder rate gun ownership percentage The text states that self-esteem correlates negatively with depression. a. Which of the following scatterplots could support that statement? Risk of Depression 6. 1. 2. b. Based on the two scatterplots above, is it possible to say that low self-esteem causes depression? Why or why not? The data is inconsistent as there seems to be a negative correlation in one scatterplot, while there is no correlation in the other: no. Risk of Depression Self-esteem Self-esteem PART II: 6.2 7. What is an illusory correlation? Give a example of an illusory correlation. Illusory correlation is to the phenomenon of relating two unrelated variables. Because you got sick playing with Steve, you think Steve is cursed. 8. Why should researchers (and people in general) be careful of illusory correlations? When we notice random coincidences, we may forget they are random and instead see them as correlation. It is important to have multimodal data to back up our claims/conclusions. PART III: 6.3 9. A high school track coach is interested in the impact of carbohydrate consumption on running times in her athletes. She asks half of her team to eat a huge pasta dinner the night before a big meet and asks the other half of her team to eat a large steak and no carbohydrates. Identify the variables in this experiment. • Independent variable: carbohydrate consumption • Dependent variable: running times 10. Decide whether a correlation study can answer the questions below and respond “yes” or “no” to each question. Do not try to answer the question itself. For the questions that can be studied scientifically, identify what the independent and dependent variables would be in the experiment. • Do people talk more after they have eaten than they do when they are hungry? no • Does jogging lead to a positive mental attitude? yes time spent jogging, average positive score • Are the incomes of doctors related to the grades they make in medical school? • Which emotion is stronger, love or anger? • Will people be more moral in the year 2020 than they are now? yes gpa, salary no no 11. How do random sampling (from Module 5) and random assignment differ? Random sampling is the first step in selecting a population to study and you get a test group representative of that population. Random assignment is how the participants in the experiment or control group are selected and is representative as well with each participant having an equal change of being in either group Answers to multiple- choice questions: 1. A 2. D 3. A 4. D 5. D ...
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  • Spring '16
  • Imbesi

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