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##### PSY 138 - Reasoning In Psychology Using Statistics - Illinois State Study Resources
• 3 Pages
###### 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

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

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

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

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###### 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

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

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

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

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

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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