# Statistical Analyses Using SPSS resources

### 3. Teach Yourself Worksheets (23)

Analysis of Variance ANOVA (Worksheet)

Analysis of Variance (ANOVA) is used to test a hypothesis of differences between the means of three or more groups. This teach yourself worksheet provides an introduction to Analysis of Variance including how to do this using SPSS.

Chi-Squared tests of Association Using SPSS (Worksheet)

This yourself worksheet provides an introduction to undertaking chi-sqaured tests of associaton for a two-way contingency table using SPSS. Note that the SPSS data set colours.sav referred to in the worksheet is also available here.

Chi-Squared tests of Association Using SPSS (Worksheet) Data Set colours.sav

This is a zip file containing the SPSS data set called colours.sav for use with Chi-Squared tests of Association Using SPSS (Worksheet). Note: please save this file to your PC before extracting its contents.

Cluster Analysis (Worksheet)

Cluster Analysis is a multivariate technique aimed at determining groups of similar objects. This teach yourself worksheet gives a very brief introduction to Cluster Analysis and how to perform this using SPSS. This includes some useful references at the end.

Correlation Using SPSS (Worksheet)

Using an example on calcium intake, this teach yourself worksheet focuses on the use of SPSS to obatin and interpret correlation coefficients. This also includes a number of exercises for you to try. Note that the SPSS data sets referred to in the worksheet are also available here.

Correlation Using SPSS (Worksheet) Data Sets

This is a zip file containing the SPSS data sets for use with Correlation Using SPSS (Worksheet). Note: please save this file to your PC before extracting its contents.

Factor Analysis (Worksheet)

Factor Analysis is a multivariate technique aimed at reducing a set of variables to a number of factors or constructs. This teach yourself worksheet gives a very brief introduction to Factor Analysis and how to perform this using SPSS. This includes some useful references at the end. Note: The "Analyze" --> "Data Reduction" step in SPSS (see page 3) in SPSS has now been changed to "Analyze" --> "Dimension Reduction"

Independent (Unpaired) Samples t-test (Worksheet)

Independent Samples t-tests are used to test a hypothesis of differences between two population means when your data comes from two different or independent groups of subjects. This teach yourself worksheet provides an introduction to independent samples t-tests including how to do these using SPSS.

Paired t-tests Using SPSS (Worksheet)

This yourself worksheet provides an introduction to undertaking paired t-tests using SPSS. Note that the SPSS data sets referred to in the worksheet are also available here.

Paired t-tests Using SPSS (Worksheet) Data Sets

This is a zip file containing the SPSS data sets called marks.sav and spiders.sav for use with Paired t-tests Using SPSS (Worksheet). Note: please save this file to your PC before extracting its contents.

Principal Components Analysis (Worksheet)

Principal Components Analysis (PCA) is a multivariate technique aimed at reducing the number of variables in your data set so that your new variables (components) are uncorrelated. This teach yourself worksheet gives a very brief introduction to PCA and how to perform this using SPSS. This includes some useful references at the end. Note: The "Analyze" --> "Data Reduction" step in SPSS (see page 2) in SPSS has now been changed to "Analyze" --> "Dimension Reduction"

Reliability Measures (Worksheet)

This teach yourself worksheet provides an introduction to the assessment of reliability and repeatability in measurements scales, such as those used in questionnaires. Note that the SPSS and Excel data sets rankin.sav and rankin.xlsx referred to in the worksheet are also available here.

Reliability Measures (Worksheet) Data sets

This is a zip file which contains the SPSS data set rankin.sav and Excel data rankin.xlsx for use with the Reliability Measures Worksheet. Note: please save this file to your PC before extracting its contents.

Repeated Measures (Introductory Leaflet)

Repeated measures refers to having more than one measurement on each subject. This leaflet provides a brief overview of the various techniques you should consdeir using if you have repeated measures data. This also lists some useful resources at the end.

Simple Linear Regression (Worksheet 1)

Using an example on energy consumption, this teach yourself worksheet introduces simple linear regression and how to fit and interpret Linear Regression models using SPSS.

Simple Linear Regression (Worksheet 2)

Using an example on calcium intake, this teach yourself worksheet introduces simple linear regression and how to fit and interpret Linear Regression models using SPSS. Note that the SPSS data set calcium.sav referred to in the worksheet is also available here.

Simple Linear Regression (Worksheet 2) SPSS Data Set calcium.sav

This is a zip file containing the SPSS data set called calcium.sav for use with Simple Linear Regression (Worksheet 2) which considers an example on calcium intake. Note: please save this file to your PC before extracting its contents.

Simple Linear Regression Assumptions and Predictions (Worksheet)

This teach yourself worksheet looks at the assumptions underlying simple linear regression, and how to obtain confidence intervals and prediction intervals using SPSS.

The Sign Test (Worksheet)

The Sign test can be used in place of a paired t-test when your data are either ordinal or the assumption of normality is in doubt. Note however that the Wilcoxon Signed Rank test is often preferred in this case! This teach yourself worksheet provides an introduction to the Sign test including how to do this using SPSS. Note: The "Analyze"--> "Nonparametric Tests"-->"2 Related Samples" step in SPSS (see page 2) has now been changed to Analyze"--> "Nonparametric Tests"-->"LEGACY DIALOGS"-->"2 Related Samples"

Two-Way Analysis of Variance (Worksheet)

This teach yourself worksheet looks at the use of Analysis of Variance when you have two factors (categorical grouping variables). This also includes infomation on how to do this using SPSS. Note that the SPSS data set battery.sav referred to in the worksheet is also available here.

Two-Way Analysis of Variance (Worksheet) Data Set battery.sav

This is a zip file containing the SPSS data set called battery.sav for use with the Two-Way Analysis of Variance Worksheet. Note: please save this file to your PC before extracting its contents.

Wilcoxon Mann-Whitney Tests (Worksheet)

The Wilcoxon Mann-Whitney test can be used instead of an independent (unpaired) samples t-test when your data are either ordinal or the assumption of normality is in doubt. This teach yourself worksheet provides an introduction to the Mann-Whitney test including how to do this using SPSS. Note: The "Analyze"--> "Nonparametric Tests"-->"2 Independent Samples" step in SPSS (see page 3) has now been changed to Analyze"--> "Nonparametric Tests" -->"LEGACY DIALOGS"-->"2 Independent Samples"

Wilcoxon Signed Rank Test (Worksheet)

The Wilcoxon Signed Rank test can be used instead of a paired t-test when your data are either ordinal or the assumption of normality is in doubt. This teach yourself worksheet provides an introduction to the Wilcoxon Signed Rank test including how to do this using SPSS. Note: The "Analyze"--> "Nonparametric Tests"-->"2 Related Samples" step in SPSS (see page 3) has now been changed to Analyze"--> "Nonparametric Tests"-->"LEGACY DIALOGS"-->"2 Related Samples"