Testing for a difference of means

Probably the most common statistical analysis is a test for a difference in the means of two groups. The Student's t-test is the most popular test.

Open the file tutorials\Effect of Calcium on Blood Pressure.xlsx.
Click a cell in the dataset.
On the Analyse-it ribbon tab, in the Statistical Analyses group, click Compare Groups drop-down, and then click Student t.
The analysis task pane opens.
In the Y (response) variable list, select Decrease.
In the X (factor) variable list, select Treatment.
In the Significance level edit box, enter 5%.
Click Calculate.
The results are calculated and the analysis report opens.

You can see the p-value of the hypothesis test is not significant at the 5% level. Therefore, do not reject the null hypothesis of no difference in the treatments.

Next topic: Testing assumptions of the t-test

Analyse-it Software, Ltd.
The Tannery, 91 Kirkstall Road,
Leeds, LS3 1HS,
United Kingdom

® Copyright Analyse-it Software, Ltd. 2024.
All rights reserved.

MSA (Measurement System Analysis) software Measurement System Analysis software Reference interval software ROC curve software Sensitivity & Specificity analysis software Method comparison software Bland-Altman software Deming regression software Passing Bablok software Method Validation software Statistical Process Control (SPC) statistical software SPC software Six Sigma statistical software Excel SPC addin Excel Statistical Process Control (SPC) add-in Pareto plot software software for Excel Pareto plot add-in software for Excel Pareto chart add-in software for Excel Control chart Excel add-in Process Capability statistical software Capability Analysis add-in software Principal Component analysis addin software Excel PCA add-in Excel ANOVA add-in ANCOVA software Multiple Regression analysis add-in software Multiple Linear Regression statistical software Excel model fitting software Excel statistics analysis addin software Excel statistical analysis addin software Statistics software Statistical analysis software

Last update 9:29:19 AM
AnalyseIt.Public 4.0.9096.31831 Production US Remote database