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  • 3 Pages Exam 1 Study Guide
    Exam 1 Study Guide

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Psy 138 Exam 1 Bias: a systematic error in one direction. Good research has no bias. (High=not centered; low=unreliable ) Central tendency: statistical measure that identifies a single score as representative of an entire distribution. The goal of central

  • 2 Pages Lab 23
    Lab 23

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Lab23 Worksheet PSY138,Spring2013 (1)Ifyouweretotake100samplesofsizen=10andcompute95%confidenceintervals,howmanyofthem wouldyouexpectwouldincludethepopulation?Whataboutfor99%CIs?Tryitoutusingtheapplet.Set yourSamplesizeto10&Clicksample(clearfirstifyouhadp

  • 5 Pages LAB 3
    LAB 3

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Lab 3 Worksheet Task I. Measuring personal characteristics (group project). Measure height of an individual in the group Describe your method of measurement. My method of measurement would be recorded with the length, while the participant is lying down.

  • 3 Pages Lab 15
    Lab 15

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Lab 15 Assignment PSY 138, Spring 2013 For questions 1-6: Use the chart to figure out which test to use for each study described below. Based on the information given, indicate: (a) Whether a one-tailed test can be used or if a two-tailed test is more app

  • 1 Page quiz 5 example
    Quiz 5 Example

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    1.Whatarethegenerallyacceptedcutoffpoints(orconventionallevelsofsignificance) inhypothesistestinginpsychology? .01and.05. 2.TheyourcriticalZscoreis1.64andyoursamplesZscoreis1.32onthecomparison distribution. Thenullhypothesiscannotberejected. 3.Basedonther

  • 5 Pages Exam 2 Study Guide
    Exam 2 Study Guide

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Psy 138: Exam 2 Cautions: Different scalesconvert to z-scores Restriction of range Outliers Causal claimsinterpretive caution o There must be co-variation between the 2 variables o Directionality problem: what causes what? XY or YX? Correlation: stati

  • 2 Pages Exam 3 Study Guide
    Exam 3 Study Guide

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Exam 3 Distribution of sample means Hypothesis testing 1 sample z 1 sample t Related sample t Independent sample t Hypothesis testing: inferential procedure that uses sample data to evaluate the credibility of a hypothesis about a population. Want to be a

  • 6 Pages Stats Final Exam
    Stats Final Exam

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Stats Final Exam Statistics: tools used to make decisions based on data Descriptive Statistics: o One variable: frequency distribution o Display results in a frequency distribution table and histogram Make a deviations table to get measures of central te

  • 1 Page Stats formulas
    Stats Formulas

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    ZorTtest StandardError (Estimated) Degreesof freedom/ #Ofdifference scores OneSamplez OneSamplet Df=n1 RelatedSamplet Df=nD1 IndependentSamplet Df=nA+nB2 Meanofdifferences Pooledvarianceof Independent

  • 4 Pages Lab 25
    Lab 25

    School: Illinois State

    Course: Reasoning In Psychology Using Statistics

    Lab25Worksheet PSY138,Spring2013 1. How do we determine: a. the direction of a relationship? The direction of a relationship can be determined by calculating the pearsons r or making a scatterplot and looking at the direction the points go on the graph. b

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