PSY 520 Graduate Statistics (PSY 520)

PSY 520 Topic 1 Exercise Chapter One 1.8 Indicate whether each of the following studies is an experiment or an observational study. If it is an experiment, identify the independent variable and note any possible confounding variables. Chapter Two 2.14 (a) Construct a frequency distribution for the number of difference residences occupied by graduating seniors during their college career, namely 1, 4, 2, 3, 3, 1, 6, 7, 4, 3, 3, 9, 2, 4, 2, 2, 3, 2, 3, 4, 4, 2, 3, 3, 5 (b) What i...

Chapter 1 1.8 Indicate whether each of the following studies is an experiment or an observational study. If it is an experiment, identify the independent variable and note any possible confounding variables.

PSY 520 Topic 3 Exercise Chapter 7 and 8 6.7 (a) Estimate whether the following pairs of scores for X and Y reflect a positive relationship, a negative relationship, or no relationship. Hint: Note any tendency for pairs of X and Y scores to occupy similar or dissimilar relative locations. (b) Construct a scatterplot for X and Y . Verify that the scatterplot does not describe a pronounced curvilinear trend. (c) Calculate r using the computation formula (6.1). 6.10 On the basis of an extensi...

PSY 520 Topic 6 Exercise 2, Chapter 16, 17, 18 16.9 Given the aggression scores below for Outcome A of the sleep deprivation experiment, verify that, as suggested earlier, these mean differences shouldn’t be taken seriously by testing the null hypothesis at the .05 level of significance. Use the computation formulas for the various sums of squares and summarize results with an ANOVA table. 16.10 Another psychologist conducts a sleep deprivation experiment. For reasons beyond his control, ...

PSY 520 Topic 1 Exercise Chapter One 1.8 Indicate whether each of the following studies is an experiment or an observational study. If it is an experiment, identify the independent variable and note any possible confounding variables. Chapter Two 2.14 (a) Construct a frequency distribution for the number of difference residences occupied by graduating seniors during their college career, namely 1, 4, 2, 3, 3, 1, 6, 7, 4, 3, 3, 9, 2, 4, 2, 2, 3, 2, 3, 4, 4, 2, 3, 3, 5 (b) What is the shape ...