SOCR EduMaterials AnalysisActivities NormalPower Power Random - Revision history

IvoDinov at 03:14, 31 January 2008

2008-01-31T03:14:06Z

Annie: /* SOCR Normal Power Activity: Look for Power with Generated Data, Background */

2007-08-06T22:56:07Z

‎SOCR Normal Power Activity: Look for Power with Generated Data, Background

Annie: /* SOCR Normal Power Activity: Look for Power with Generated Data */

2007-08-06T22:53:53Z

‎SOCR Normal Power Activity: Look for Power with Generated Data

Annie at 08:56, 6 August 2007

2007-08-06T08:56:41Z

Annie at 08:55, 6 August 2007

2007-08-06T08:55:54Z

Annie at 08:52, 6 August 2007

2007-08-06T08:52:47Z

Annie at 08:49, 6 August 2007

2007-08-06T08:49:46Z

Annie at 08:46, 6 August 2007

2007-08-06T08:46:30Z

Annie at 07:10, 6 August 2007

2007-08-06T07:10:51Z

New page

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig1.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig2.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig3.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig4.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig5.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig6.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig7.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig8.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig9.gif|700px]]</center>

<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig10.gif|700px]]</center>

@@ Line 1: / Line 1: @@
-=== SOCR Normal Power Activity: Look for Power with Generated Data, Background ===
+=== [http://socr.ucla.edu/htmls/SOCR_Analyses.html SOCR Normal Power] Activity: Look for Power with Generated Data, Background ===
@@ Line 12: / Line 12: @@
 Note that, H_A can be testing the cases of '''mu_0 > mu_A''', and '''mu_0 < mu_A'''. The options are also provided by this tool.
-=== SOCR Normal Power Activity: Look for Power with Generated Data, Example ===
+=== [http://socr.ucla.edu/htmls/SOCR_Analyses.html SOCR Normal Power] Activity: Look for Power with Generated Data, Example ===
 You'll first need to tell the computer to generate some data for you.

@@ Line 8: / Line 8: @@
 '''H_0''' the true mean, '''mu''', is equal to some constant, '''mu_0'''.
-'''H_A''': the true mean, '''mu''', is not equal to '''mu_0'''. And we are testing for another possible mean, mu_A.
+'''H_A''': the true mean, '''mu''', is not equal to '''mu_0'''. And we are testing for another possible mean, '''mu_A'''.
 Note that, H_A can be testing the cases of '''mu_0 > mu_A''', and '''mu_0 < mu_A'''. The options are also provided by this tool.
 === SOCR Normal Power Activity: Look for Power with Generated Data, Example ===

← Older revision		Revision as of 22:53, 6 August 2007
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−	=== SOCR Normal Power Activity: Look for Power with Generated Data ===	+	=== SOCR Normal Power Activity: Look for Power with Generated Data, Background ===
		+
		+
		+	With two parent distributions, both of the same standard deviation ('''sigma'''), and we already know the power we want, we'd like to find the sample size needed. The significance level needs to be provided by the user.
		+
		+	The two hypotheses are written as:
		+
		+	'''H_0''' the true mean, '''mu''', is equal to some constant, '''mu_0'''.
		+
		+	'''H_A''': the true mean, '''mu''', is not equal to '''mu_0'''. And we are testing for another possible mean, mu_A.
		+
		+	Note that, H_A can be testing the cases of '''mu_0 > mu_A''', and '''mu_0 < mu_A'''. The options are also provided by this tool.
		+
		+
		+	=== SOCR Normal Power Activity: Look for Power with Generated Data, Example ===
		+
		+	You'll first need to tell the computer to generate some data for you.
		+	The distribution's paramters (mean and standard deviation) are calucluated from the randomly generated data. The sample size is computed as well. And then, you need to input the mean for the alternative hypothesis for the power of the test.
		+

@@ Line 24: / Line 24: @@
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig5.gif|700px]]</center>
-'''4.''' Have all the fields filled out, and then click on '''CALCULATE''' and then '''RESULT''', the results are given.
+'''4.''' Be sure to select '''Get Power Using Sample Size'''. Have all the fields filled out, and then click on '''CALCULATE''' and then '''RESULT''', the results are given.
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig6.gif|700px]]</center>

← Older revision		Revision as of 08:55, 6 August 2007
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		+	=== SOCR Normal Power Activity: Look for Power with Generated Data ===
		+
		+
	'''1.''' Click on '''DATA''' and then '''RANDOM EXAMPLE''' to generate random data.		'''1.''' Click on '''DATA''' and then '''RANDOM EXAMPLE''' to generate random data.

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 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig5.gif|700px]]</center>
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig7.gif|700px]]</center>
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig8.gif|700px]]</center>
-<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig9.gif|700px]]</center>
+<hr>
-<center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig10.gif|700px]]</center>
+{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=SOCR_EduMaterials_AnalysisActivities_NormalPowerPowerRandom}}

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 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig2.gif|700px]]</center>
 Just click on '''MAPPING''' and you'll see a screen like below. Here, we only have one column, X. Click on '''ADD''' to include X for compuation.
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig3.gif|700px]]</center>
-'''3.'''
+'''3.''' After you do the mapping, the mean and standard deviation of the data are calculated and show in the '''SELECT PARAMETER''' panel.
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig4.gif|700px]]</center>
 <center>[[Image:SOCR_AnalysisActivities_NormalPowerPowerRandom_Chu_051707_Fig5.gif|700px]]</center>