Questions tagged [spss]

IBM SPSS Statistics is a statistical software package. Use this tag for any on-topic question that (a) involves SPSS either as a critical part of the question or expected answer and (b) is not just about how to use SPSS.

SPSS (Statistical Package for the Social Sciences) is a proprietary cross-platform general-purpose statistical software package. SPSS's homepage The official name at present is IBM SPSS Statistics.

SPSS has both well-developed GUI and command syntax. One unique aspect of SPSS Statistics compared to other popular propriety software packages (such as Stata or SAS) is the built in functionality to call Python or R commands within syntax (in addition to SPSS own commands). Otherwise it is largely comparable to other general proprietary and freeware packages (such as R), although it differs in some advanced statistical capabilities and aspects of data manipulation.

Suggested readings on using SPSS and learning the command syntax are two online PDF's.

Other useful print versions are

Forums and groups entirely devoted to the software are (and suggested material to search when encountering a problem with SPSS are):

Other suggested webpages are

PSPP is a free-ware, open source alternative largely mimicking the look and functionality of SPSS.

2032 questions
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Can we apply stepwise forward or backward variables selection in negative binomial regression in SPSS?

I am trying to adjust my covariates in a model. My dependent variable is count data variance is greater than mean which means I have to apply negative binomial regression, main independent variable (bullying) is binary (0/1), and I have few…
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SPSS three way dummy variables and descriptive statistics

I have two dummy variables, X1 and X2. Each one is coded into 0 or 1. Here is the breakdown: alcohol use X7 X8 none 0 0 moderate 1 0 severe 0 1 I don't understand how to tell SPSS that when X7 is 0, AND X8…
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How to enter a single case twice without increasing the total number of the cases in the dataset?

My research is archaeological and I am looking at distribution of Roman lamps across time. Most of my lamps are coded into 50-year brackets within a single categorical variable (0-50 CE =1, 50-100 CE =2, 100-150 CE =3, 150-200 CE =4 and so forth).…
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Why does SPSS create false means in my clustered bar chart?

I'm pulling my hair out on this one, so hope somebody can help me out. I'm using SPSS 19 on a dataset structured like this (dummy data): Time1 Time2 Time3 Group ----- ----- ----- ----- 0 2 4 0 0 0 5 …
Alex
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In SPSS, is there any way to define a use groups of data based on combinations of variables?

I have a data file in which each participant is tested many times in several blocks. The data is formatted so that each trial contains a participant id, a block number and a score. What I want to do is group the data by participant and block, then…
Tom Wright
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Need to determine the correct statistical test for my study

Good afternoon. I am working on a study to determine if there is a difference in caregiver empowerment for those who have worked with a Family Support Partner and those that have not. I am using the Family Empowerment Scale as my measure. To score…
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Chi-square VS McNemar or something different

The research question is: Is there a difference in hand preference when typing vs writing? I have 3 methods: the 'Hand preference' when typing vs when writing as Left, Right, No preference. I need to find out if there is a significant difference in…
helpame
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How to get last available row in SPSS?

I have the following column: Growth 0.1 0.5 0.23 . 0.5 0.67 0.23 0.42 . . . 0.12 0.20 Where dots indicate that there was no data available at that time. Now I want to compute the difference in growth between the current case and the last available…
Tom
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Computing average of data in multiple (different) columns in SPSS

I have a SPSS data file, which i am trying to reduce. However the data which belongs together is spread within multiple columns. I.e. I have one row per subject, but each subject has done multiple different conditions as well as procedures. The…
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Variance based on given frequencies using SPSS

I'd be too happy, if someone could post a code snippet, which explains how to compute mean and variance of a set of records, which contain frequencies? Suppose we have records like (FORMAT F) - GroupA, 6 x Grade 1, 5 x Grade 2, 10 x Grade 3 -…
SteAp
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Need help for which test to choose?

I am studying on cognition and behaviors. I am lecturing linguistic courses and teaching linguistic terminology with visuals. In my research, just before each course, I asked participants 20 behavioral yes-no questions like "have you ever been…
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Multiple response question with duplicated answers

I have a multiple response (categories) question (Q11, ..., Q15). My problem is that the data-entry clerck repeats the answers in the same case. Example: Q11 Q12 Q13 Q14 Q15 Case 1 001 003 015 001 022 (001 was type twice) Case 2 089 032 089…
user3729
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Effect size Mann Whitney

I did a man Whitney to investigate the difference in BDI score between males and females. I got an r effect size of -0.09, what type of effect size is this ?
Sus
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What kind of test should I run in SPSS/Jamovi to analyze a Randomized-Controlled trial? I have 3 groups and 2 time points (and small sample sizes)?

I have 3 groups: Intervention 1 (n=6) Intervention 2 (n=9) Treatment as usual (n=12) And I have 2 time points (pre and post intervention) What kind of test do you recommend? Thank you!
oliverl
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Regression predicting car acceleration in SPSS

I have a file containing ca. 900+ car models manufactured in 2021. In addition, I have technical data on 27 cars however, they miss: acceleration, top speed, fuel consumption, and CO2-emissions. I found out, from a Google search, that for…
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