- Study guides, Class notes & Summaries

If 100,000 samples are drawn from a population distributed like this...what, approximately, will the distribution of sample means look like? - correct answer Normal, unimodal distribution A particular standardized test has a population mean score of 75 and standard deviation of 7.5, and the scores are normally distributed. If a person's score places them at the 5th percentile on this test (from the bottom), what is this person's score? - correct answ...

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10 pages

Written in 2024/2025

Grade A+

RealGrades

The UVA Career Center is planning its staffing needs and wants whether second-year students differ from third-year students in their annual visits to the Center. They have historical data for annual visits by third-years, mu =4.2, theta = 1.3, but not for second-years. So the staff randomly samples N=10 second-year students and finds that they average M=3.3 annual visits. Standard error? 95% confidence limits for second years? Statistically significant? Cohen's d effect size? -...

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8 pages

Written in 2025/2026

Grade A+

GEEKA

PSYC 2005 Exam 3 Questions with Correct Answers (Grade A+) 2 Exam (elaborations) PSYC 2005 Exam 4 Questions with Correct Answers (Grade A+)

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2 items

DrJon

Question 1: Correlation Answer: A measure of the degree of relationship between 2 variables Question 2: Prediction Answer: When two variables are correlated, estimating the value of one variable from the known value of the other -accuracy of predictions increase as correlations increase Question 3: Bivariate distribution Answer: A distribution that shows the relationship between 2 variables Question 4: Scatter diagram Answer: A graph of a bivariate distribution consisting of dots at the ...

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5 pages

Written in 2026/2027

Grade A+

DrJon

Question 1: Correlational method Answer: 2 or more variables are systematically measured and the relationship between them is assessed-predictor variable vs dependent variable Question 2: Pros and cons of correlational research Answer: Pros -can predict consumer behavior -useful when variables cannot be manipulated Cons -cannot determine causation Question 3: Dependent samples Answer: When each score in 1 sample is paired with a specific score in the other sample -testing the same set of ...

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8 pages

Written in 2026/2027

Grade A+

DrJon

Psyc 2005 Exam 2 2026/2027 | Psyc 2005 Exam 2 Questions, Study Guide & Comprehensive Review

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6 pages

Written in 2026/2027

Grade A+

7Eleven

Where does a Cohen's d effect size of -1.39 fall in terms of Jacob Cohen's suggested conventions? - Answer -Large When interpreting a boxplot, what does the top of the box tell you? - Answer -The 75th percentile score To be scientific, a theory must be testable. This means the theory must be: - Answer -Falsifiable The UVA Career Center is planning its staffing needs and wants whether second-year students differ from third-year students in their annual visits to the Center. They...

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7 pages

Written in 2025/2026

Grade A+

GEEKA

What does the top of a boxplot tell you? A: median score B: the point beyond which the scores are outliers C: 75% percentile D: high end of a 95% confidence interval - answer -c 75% percentile Which of these is a z-score you would use if conducting a two-tailed z test with an alpha level of 0.05? A: 1.64 B: 1.96 C: 2.58 - answer -b 1.96 Which of these is a z-score you would use if conducting a two-tailed z test with an alpha level of 0.10? A: 1.64 B: 1.96 C: 2.58 - answer -a...

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6 pages

Written in 2025/2026

Grade A+

GEEKA

structural model logic (vs the first method) - correct answer focuses directly on what contributes to the divisions of the deviations of scores from the grand mean earlier method ANOVA - correct answer comparing a variance based on differences among group means to a variance based on averaging variances of the group what creates within groups variations - correct answer chance fac...

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7 pages

Written in 2024/2025

Grade A+

RealGrades

Low constraint research - correct answer negates a general proposition ex: naturalistic observation, surveys, case studies, experimenter reactivity - correct answer any action by researchers that tends to influence the response of participants experimenter bias - correct answer any impact that the researcher's expectations might have on the observations or recording of those o...

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2 pages

Written in 2024/2025

Grade A+

RealGrades

False psychology - correct answer undisclosed flexibility in data collection analysis allows presenting anything as significant 6 solutions for authors to follow to solve the ambiguity-flexibility problem - correct answer 1) authors must decide the rule for terminating data collection before data collection begins and report this rule in the article 2) authors must collect at least 20 observations per cell or else prov...

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4 pages

Written in 2024/2025

Grade A+

RealGrades

types of statistics: - correct answer descriptive and inferential variable: - correct answer characteristics that can have different values values: - correct answer possible number or category that a score can have score: - correct answer a particular person's value on a variable types of dependent and independent variables - correct a...

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12 pages

Written in 2024/2025

Grade A+

RealGrades

descriptive statistics - correct answer psychologists use this to summarize and describe a group fo numbers from a research study inferential statistics - correct answer we use this to draw conclusions and make inferences that are based on the numbers from a research study but go beyond the numbers equal interval variable - correct answer variable in which numbers stand for approx...

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9 pages

Written in 2024/2025

Grade A+

RealGrades

To investigate whether the use of digital screens is related to adolescent well-being as some previous research has suggested, Orben and Przybylski analyzed data from 525 adolescents in the United States. Participants self-reported daily time use (in minutes) of digital screens and responded to a questionnaire that assessed the number of depressive symptoms present. What type of research design does this description suggest? A. experimental B. correlational C. differential - correct answer...

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11 pages

Written in 2024/2025

Grade A+

RealGrades

central tendency - correct answer typical or most representative value of a group of scores outlier - correct answer score with an extreme value (very high or very low) in relation to the other scores in the distribution mean - correct answer -used with equal-interval variables; numerical values -very commonly used in psychology research -use when distribution symmetrical -can ...

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19 pages

Written in 2024/2025

Grade A+

RealGrades