'2 sample' diaporamas de présentation

LSSG Black Belt Training

LSSG Black Belt Training. Hypothesis Testing. Introduction. Always about a population parameter Attempt to prove (or disprove) some assumption Setup: alternate hypothesis : What you wish to prove Example: Change in Y after LSS Project

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Testing means, part III The two-sample t-test

Testing means, part III The two-sample t-test. One-sample t-test. Null hypothesis The population mean is equal to ? o. Sample. Null distribution t with n-1 df. Test statistic. compare. How unusual is this test statistic?. P > 0.05. P < 0.05. Reject H o. Fail to reject H o.

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BUS 308 OUTLET Peer Educator/ bus308outlet.com

BUS 308 Entire Course (New) FOR MORE CLASSES VISIT www.bus308outlet.com BUS 308 Week 1 DQ 1 Data Scales BUS 308 Week 1 DQ 2 Probability BUS 308 Week 1 Quiz BUS 308 Week 1 Problem Set Week One BUS 308 Week 2 Journal BUS 308 Week 2 DQ 1 t-Tests BUS 308 Week 2 DQ 2 ANOVA Testing BUS 308 Week 2 Quiz BUS 308 Week 2 Problem Set BUS 308 Week 3 DQ 1 Interval Data BUS 308 Week 3 DQ 2 Correlation BUS 308 Week 3 Assignment Evaluation of Correlations BUS 308 Week 4 DQ 1 Simple Regression Analysis BUS 308 Week 4 DQ 2 Multiple Regressions Analysis BUS 308 Week 4 Problem Set BUS 308 Week 4 Quiz BUS 308 Week 5 DQ 1 Confidence Intervals BUS 308 Week 5 DQ 2 Correlation and Confidence Intervals BUS 308 Week 5 Final Paper

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Ch7 Inference concerning means II

Ch7 Inference concerning means II. Dr. Deshi Ye yedeshi@zju.edu.cn. Review. Point estimation: calculate the estimated standard error to accompany the point estimate of a population. Interval estimation

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T Test by SPSS

T Test by SPSS. by Aaed Al- Rabai. Two sample t. Standardized Difference. The case of equal variance. 2 sample t test (assuming equal variance). t-test for 2 independent samples. Null Hypothesis: No difference in mean blood PH levels between battery workers and control group

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Inference About 2 or More Normal Populations, Part 2

Inference About 2 or More Normal Populations, Part 2. BMTRY 726 2/11/2014. Two Independent Samples. Collect two independent random samples, one from each population Note we assume ( i ) Normality (ii) Equal covariance matrices (iii) Independent random samples.

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Independent samples t-tests

Independent samples t-tests. Two-Sample t-Tests. Distinguish between the statistical question underlying CIs , 1-sample hypothesis tests and 2-sample hypothesis tests. Describe the procedures for conducting independent 2-sample hypothesis tests when ? is known .

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Fall Exam

Fall Exam. What is in the exam: Chapters 1-9 Lecture Slides 01-08 (up to and including Linear Regression) Assignments 1-2. Fall Term Material. Basics Scales of measurement Continuous vs. discrete variables Independent and dependent variables Experimental vs. correlational research

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BUS 308 Innovative Educator/bus308.com

BUS 308 dedicated to helping you to exceed your career goals.

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Ch 10 Comparing Two Proportions

Ch 10 Comparing Two Proportions. Target Goal: I can determine the significance of a two sample proportion. 10.1b h.w : pg 623: 15, 17, 21, 23.

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8-5 Estimating mean differences

8-5 Estimating mean differences. Comparing two populations. Are two populations different? Really? Just a little? What if I wanted to compare the mean test grades of two classes. How different might they be? Independent samples are completely unrelated to each other.

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Guess the Distance

Guess the Distance. By Amanda Cunha and Ashley Kershaw. Description of topic. Depth perception- the ability to judge how far away an object is as well as how far away objects are from each other With glasses depth perception can be impaired

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Warm Up

Warm Up. Of all Geometry students at NRHS a sample was taken to try to test the claim that their mean score on the last quiz was an 87. The following are the sample scores: 86, 85, 90, 91, 74, 87, 82, 70, 58, 78, 81 Test if the true mean score is different from the claim.

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Airborne Observations of Atmospheric O 2 and CO 2 on Regional to Global Scales

Airborne Observations of Atmospheric O 2 and CO 2 on Regional to Global Scales. Britton Stephens (NCAR, Boulder, USA and NIWA, Wellington, New Zealand)

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BUS 308 Course Real Knowledge / bus308dotcom

For more course tutorials visit www.bus308.com BUS 308 Week 1 DQ 1 Language BUS 308 Week 1 DQ 2 Probability BUS 308 Week 1 Quiz BUS 308 Week 1 Problem Set BUS 308 Week 1 Quiz (New) BUS 308 Week 2 DQ 1 Hypotheses

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13.1: Comparing 2 means

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Ch. 27 More tests for averages

Ch. 27 More tests for averages. New test: compare 2 averages from 2 samples Box A Box B average of sample A average of sample B SD of sample A SD of sample B a =SE for avg. of sample A b =SE for avg. of sample B. Null hypothesis: Average of box A = Average of box B

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SUSY Validation EVGEN validation of 13.0.30.2

SUSY Validation EVGEN validation of 13.0.30.2. Claire Gwenlan UCL October 24, 2007 Physics Validation Meeting. Samples Used. ? 13.0.30.2 sample: - evgen 13.0.30.2 (13.0.20.2 fastsim) - 15000 events analysed ? valid1_005403.SU3_jimmy_susy.atlfast.NTUP.v13003002_tid015653

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Dependent t -test

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