PSYC515 QUIZ 1 - REVIEW CONCEPTS

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Colorado State University, Global Campus *

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515

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Statistics

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Feb 20, 2024

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Instructions The quiz:  Covers the Learn material from Module 1: Week 1 .  Contains 25 multiple-choice questions .  Is limited to 90 minutes .  Allows 1 attempt .  Is worth 50 points . This quiz is designed to assess understanding of content from this week’s topics covered in the Learn section (non-cumulative) and will not require use of SPSS. You have 90 minutes to complete these 25 questions. This allows for judicious use of time to refer to assigned readings and presentations (open book / open notes), but should be completed with no other forms of collaboration. Please note: that the first question asks you to indicate your agreement to abide by LUO's Online Honor Code. Answering this question is required . Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 1: Week 1. Attempt History Attempt Time Score LATEST Attempt 1 69 minutes 40 out of 50 Correct answers are hidden. Score for this quiz: 40 out of 50 This attempt took 69 minutes. Question 1 0 / 0 pts I have read and understand the Academic Honor policy as outlined in the Online Honor Code for Liberty University Online. I agree to abide by this policy and that the work submitted herein is my own. Yes No No answer text provided. No answer text provided.

Question 2 2 / 2 pts Scenario: Suppose participants complete an experiment where ads are presented subliminally during a task (e.g., Pepsi ads are flashed at a very fast rate during movie ads). Participants are then given a recognition test for images of the ads, where two images are presented and participants must choose which one of the two was presented earlier. Both men and women (18 of each gender) participate in the study, and the researcher predicts that recognition accuracy (0 — 100%) will differ based on gender. Question: As taught in 510/515, what is the most appropriate graph to illustrate this scenario? Scatterplot Clustered bar graph Bar graph Box plot Incorrect Question 3 0 / 2 pts Scenario: Suppose participants complete an experiment where ads are presented subliminally during a task (e.g., Pepsi ads are flashed at a very fast rate during movie ads). Participants are then given a recognition test for images of the ads, where two images are presented and participants must choose which one of the two was presented earlier. Both men and women (18 of each gender) participate in the study, and the researcher predicts that recognition accuracy (0 — 100%) will differ based on gender. Question: Which of the following best describes this scenario? It is one-tailed; directional. It is two-tailed; non-directional. It is one-tailed; non-directional.

It is two-tailed; directional. Question 4 2 / 2 pts Scenario: Suppose participants complete an experiment where ads are presented subliminally during a task (e.g., Pepsi ads are flashed at a very fast rate during movie ads). Participants are then given a recognition test for images of the ads, where two images are presented and participants must choose which one of the two was presented earlier. Both men and women (18 of each gender) participate in the study, and the researcher predicts that recognition accuracy (0 — 100%) will differ based on gender. Question: What is the independent variable in this scenario? Pepsi ads Gender Recognition accuracy Rate of presentation Incorrect Question 5 0 / 2 pts Scenario: Suppose participants complete an experiment where ads are presented subliminally during a task (e.g., Pepsi ads are flashed at a very fast rate during movie ads). Participants are then given a recognition test for images of the ads, where two images are presented and participants must choose which one of the two was presented earlier. Both men and women (18 of each gender) participate in the study, and the researcher predicts that recognition accuracy (0 — 100%) will differ based on gender. Question: Which of the following best describes the scenario? Between-subjects Within-subjects – WRONG Mixed design

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Question 6 2 / 2 pts Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits over an e-book. She conducts a study where participants are randomly assigned to read a passage either on a piece of paper or on a computer screen. After a distractor task lasting 30 minutes, the participants are tested for their comprehension of the passage with a multiple-choice test containing 10 questions about their passage. Comprehension was scored using percent correct (0 — 100%). The researcher predicts that those randomly assigned to read the passage on a piece of paper will remember significantly more than those who read the passage online. Question: As taught in 510/515, what is the most appropriate graph to illustrate this scenario? Scatterplot Clustered bar graph Bar graph Box plot Question 7 2 / 2 pts Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits over an e-book. She conducts a study where participants are randomly assigned to read a passage either on a piece of paper or on a computer screen. After a distractor task lasting 30 minutes, the participants are tested for their comprehension of the passage with a multiple-choice test containing 10 questions about their passage. Comprehension was scored using percent correct (0 — 100%). The researcher predicts that those randomly assigned to read the passage on a piece of paper will remember significantly more than those who read the passage online. Question: Which of the following best describes the research design? Descriptive Predictive

Quasi-experimental Experimental Question 8 2 / 2 pts Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits over an e-book. She conducts a study where participants are randomly assigned to read a passage either on a piece of paper or on a computer screen. After a distractor task lasting 30 minutes, the participants are tested for their comprehension of the passage with a multiple-choice test containing 10 questions about their passage. Comprehension was scored using percent correct (0 — 100%). The researcher predicts that those randomly assigned to read the passage on a piece of paper will remember significantly more than those who read the passage online. Question: What is the scale of measurement of the dependent variable in this scenario? Nominal Ordinal Scale Question 9 2 / 2 pts Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits over an e-book. She conducts a study where participants are randomly assigned to read a passage either on a piece of paper or on a computer screen. After a distractor task lasting 30 minutes, the participants are tested for their comprehension of the passage with a multiple-choice test containing 10 questions about their passage. Comprehension was scored using percent correct (0 — 100%). The researcher predicts that those randomly assigned to read the passage on a piece of paper will remember significantly more than those who read the passage online. Question: What is the null hypothesis for this scenario? People who read a passage on a piece of paper will remember more than those who read a passage online. People who read a passage on a piece of paper will not remember more than those who read a passage online.

Amount remembered of a passage will vary based on whether people read the scenario on a piece of paper verses online. Amount remembered of a passage will not vary based on whether people read the scenario on a piece of paper verses online. Question 10 2 / 2 pts Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: Which of the following best describes the research design? Descriptive Predictive Correlational Experimental Question 11 2 / 2 pts Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: What is the research / alternate hypothesis for this scenario? Ability to predict card suits differs based on a psych's environment. Ability to predict card suits does not differ based on a psychic's environment.

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Psychics can better predict card suits when in their natural environment. Psychics cannot better predict card suits when in their natural environment. Incorrect Question 12 0 / 2 pts Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: What is the dependent variable in this scenario? Environment Accuracy rate ESP – WRONG Card suit Question 13 2 / 2 pts Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: What is the most appropriate statistical test to conduct given this scenario? Independent samples t-test Correlated groups t-test

Pearson's r correlation Phi correlation Question 14 2 / 2 pts Scenario: Is there a relationship between GPA (X) and amount of time spent playing video games (Y)? A researcher quantified GPA as self-report on a scale of 0 — 4.0 and had students self-report the number of hours spent playing video games per week. Question: What is the scale of measurement for variable X in this scenario? Nominal Ordinal Scale Question 15 2 / 2 pts Scenario: Is there a relationship between anxiety (X) and belief in God (Y)? A researcher had participants self-report their anxiety as "low", "moderate", or "high". Participants also reported their belief in God as "non-existent", "belief but unsure", "belief but weak", or "strong belief". Question: What is the scale of measurement for variable Y in this scenario? Nominal Ordinal Scale Question 16 2 / 2 pts Scenario: Is there a relationship between test scores (X) and presentation type (Y)? Test scores were quantified using the % correct. Students were able to choose the presentation type of

their test — they could take the test online or in-person. Question: What is the scale of measurement for variable X in this scenario? Nominal Ordinal Scale Question 17 2 / 2 pts Scenario: Does studying with background music (X) improve test scores (Y)? Students self- reported whether or not they listened to background music ("Yes" or "No"), and the last score the earned on an exam (0-100%). Question: What is the scale of measurement for variable Y in this scenario? Nominal Ordinal Scale Question 18 2 / 2 pts Scenario: Is there a relationship between amount of time at a job (X) and productivity (Y)? The researcher quantified amount of time at a job by ranking the employees from those who had been there the least amount of time to the most. The researcher quantified productivity as rating the employees from "best" to "worst". Question: What is the scale of measurement for variable X in this scenario? Nominal Ordinal Scale

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Question 19 2 / 2 pts Scenario: Is there a relationship between GPA (X) and amount of time spent playing video games (Y)? A researcher quantified GPA as self-report on a scale of 0 — 4.0 and had students self-report the number of hours spent playing video games per week. Question: What is the scale of measurement for variable Y in this scenario? Nominal Ordinal Scale Question 20 2 / 2 pts Scenario: Is there a relationship between number of hours studied (X) and final exam scores (Y)? Question: What is the scale of measurement for variable X in this scenario? Nominal Ordinal Scale Question 21 2 / 2 pts If examining the relationship between academic rank and ranked attractiveness, which statistical test would be most appropriate? Point biserial correlation Pearson's r correlation

Spearman correlation Paired samples t-test Incorrect Question 22 0 / 2 pts If a teacher wants to assess whether there is a relationship between males and females on test performance, the most appropriate statistical test would be: point biserial correlation independent samples t-test – MAYBE? correlated groups t-test pearson's r correlation – WRONG Question 23 2 / 2 pts If interested in the relationship between height (in inches) and weight (in pounds), which test would be most appropriate? Spearman's correlation Pearson's r correlation Point-biserial correlation Phi correlation Incorrect Question 24 0 / 2 pts If your obtained value for a Pearson r is 0.7067 and your critical value is 0.62, which of the following statements would be most accurate? not enough information is provided

not enough information is provided conclude there is no effect fail to reject the null hypothesis – WRONG reject the null hypothesis – MAYBE? Question 25 2 / 2 pts Which of the following correlation coefficients is the strongest? 0.03 -0.51 -0.94 0.83 Question 26 2 / 2 pts In an experimental study of the effects of anxiety on appetite, where subjects are randomly assigned to either an anxiety group or the no-anxiety group, anxiety is the: dependent variable independent variable control variable

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extraneous variable Quiz Score: 40 out of 50

PSYC515 QUIZ 1 - REVIEW CONCEPTS

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