Free Statistics

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Author's title

Author*The author of this computation has been verified*
R Software Moduletest_mean.wasp
Title produced by softwarePopulation Mean Test
Date of computationMon, 25 Oct 2010 19:55:17 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2010/Oct/25/t12880364864ulfwo5s0isxfsb.htm/, Retrieved Mon, 29 Apr 2024 18:17:46 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=88444, Retrieved Mon, 29 Apr 2024 18:17:46 +0000
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Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact143
Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Testing Mean with unknown Variance - Critical Value] [WS4 - task 2] [2010-10-25 19:20:58] [8ef49741e164ec6343c90c7935194465]
F RMPD    [Population Mean Test] [Ws 4 - Q2 - Hypot...] [2010-10-25 19:55:17] [0829c729852d8a4b1b0c41cf0848af95] [Current]
F    D      [Population Mean Test] [Ws 4 - Q2 - Hypot...] [2010-10-25 19:58:06] [603e2f5305d3a2a4e062624458fa1155]
F    D      [Population Mean Test] [Ws 4 - Q2 - Hypot...] [2010-10-25 20:00:07] [603e2f5305d3a2a4e062624458fa1155]
Feedback Forum
2010-10-31 07:40:24 [48eb36e2c01435ad7e4ea7854a9d98fe] [reply
De berekeningen die de student hier gemaakt heeft zijn correct. Op basis van deze zeer kleine P- waarde (die kleiner is dan de alfa- fout van 0,05) kan men inderdaad beslissen om de nulhypothese te verwerpen. Het testen van de eerste hypothese gebeurde dus correct.

Echter om de twee andere geformuleerde hypotheses te testen voor de T- treatment, moet men de software nieuwe berekeningen laten maken, waarin men bij H0 dit keer niet nul, maar 1 of (voor hypothese 3) 5 invult.

Bovendien is de software die hier gebruikt werd enkel geschikt voor 2- zijdige testen. Voor hypothese 1 is dit dus geen enkel probleem. Voor de overige twee hypotheses zal men deze ofwel anders moeten formuleren, ofwel gebruik moeten maken van een andere software module; 'Testing Mean with unknown Variance - Critical Value'.

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Dataseries X:
4
0
5
0
0
0
0
1
5
1
4
1
3
1
0
0
1
0
1
2
2
1
2
-1
3
-1
0
0
1
0
-1
4
0
1
0
0
4




Population Mean Test - Ungrouped Data
StatisticValue
H0: mean =0
H1: mean <>0
Arithmetic Mean1.1891892
Standard Error0.278989
T-STAT4.26249
p-value0.00014
Observations37

\begin{tabular}{lllllllll}
\hline

Population Mean Test - Ungrouped Data \tabularnewline

Statistic
Value \tabularnewline H0: mean =0 \tabularnewline H1: mean <>0 \tabularnewline Arithmetic Mean1.1891892 \tabularnewline Standard Error0.278989 \tabularnewline T-STAT4.26249 \tabularnewline p-value0.00014 \tabularnewline Observations37 \tabularnewline \hline \end{tabular} %Source: https://freestatistics.org/blog/index.php?pk=88444&T=0

[TABLE]

[ROW][C]Population Mean Test - Ungrouped Data[/C][/ROW]

[ROW][C]Statistic[/C]
Value[/C][/ROW] [ROW][C]H0: mean =[/C]0[/C][/ROW] [ROW][C]H1: mean <>[/C]0[/C][/ROW] [ROW][C]Arithmetic Mean[/C]1.1891892[/C][/ROW] [ROW][C]Standard Error[/C]0.278989[/C][/ROW] [ROW][C]T-STAT[/C]4.26249[/C][/ROW] [ROW][C]p-value[/C]0.00014[/C][/ROW] [ROW][C]Observations[/C]37[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=88444&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=88444&T=0

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The GUIDs for individual cells are displayed in the table below:

Population Mean Test - Ungrouped Data
StatisticValue
H0: mean =0
H1: mean <>0
Arithmetic Mean1.1891892
Standard Error0.278989
T-STAT4.26249
p-value0.00014
Observations37



Parameters (Session):
Parameters (R input):
R code (references can be found in the software module):