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This 1 page Class Notes was uploaded by Alexandrine Dietrich on Monday September 28, 2015. The Class Notes belongs to BIOL 620 at Old Dominion University taught by Mark Butler in Fall. Since its upload, it has received 7 views. For similar materials see /class/215303/biol-620-old-dominion-university in Biological Sciences at Old Dominion University.
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Date Created: 09/28/15
Biometry Biol 620 SPSS for Onesample Twosample and Paired Ttests One sample T test I Data File Format need one column that contains the data for each replicate each row See the data le example below 530 491 etc II Analysis 1 From the pulldown menu Analyze Compare Means one sample T test ltclick on thisgt 2 a Click to highlight the dependent variable column name in the left window menu then click on the arrow to move it to the right window to de ne the DEPENDENT VARIABLE b In the Test Value window at the bottom right type in the expected value against which you want to test the sample mean Then click the OK button to run the analysis 111 ReSUIt OneSample Test 95 Confidence Interval of the Two sample T test I Data File Format need two columns one that speci es which treatment group each data value comes from and one that contains the data for each replicate See the data le example below column 1 treatment column 2 data 1 530 2 491 2 572 etc II Analysis 1 From the pulldown menu Analyze Compare Means independent samples T test ltclick on thisgt 2 Click to highlight the dependent variable column name in the left window then click on the arrow to move it to the Test Variable window to de ne the DEPENDENT VARIABLE Then highlight the independent variable column name in the left window then click the arrow to move it to the Grouping Variable window 3 Click on the Define Groups button to reveal a window in which you type in the letters numbers or words case sensitive that de ne the two treatment groups Test Group I and Test Group 2 Click the Continue button to return to the previous window Then click the OK button to run the analysis III Result Independent Samples Test Levene39s Test for Equality ofVariances ttest to Equality of IIIsans 95 Con dence Interval ofthe Std Error I F Sig t df Sig 2tailed Difference Difference Lower Upper CL q assumed 35907 000 33766 766 000 16634 4926 176014 156672 Equal variances not assumed 34178 691063 000 16634 4867 475899 156787
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