Tagged Questions

1
vote
0answers
19 views

Test regression parameter against a constant in SPSS

This is a pretty basic question, but I can't find an answer by searching for different statements of the same problem. Is there a straightforward way to test if a regression parameter is different ...
0
votes
0answers
28 views

Non-significant results

I conducted a between-subjects study and all my results were non-significant. Now, for a repeated measures I know you go into Mauchlys when reporting, but since my study isn't a repeated measures but ...
1
vote
2answers
255 views

Which statistical test to use for Likert scale questionaire

I need help on determining what tests to use in SPSS. Let me provide some background on my research: I am doing a research on system automation of leave management in a company (which is still using ...
0
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0answers
154 views

Comparing two likert scale answers

we have performed a study asking participants to describe a current method they use to perform various interaction scenarios on computers and a proposed method they would instead like to use. We have ...
0
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0answers
40 views

Comparing tests for staging cancer

I am comparing 4 different tests for the evaluation/identification of cancer. One is a continuous variable yielding cut-off values based on both the mean and the median of 5 consecutive measurements ...
0
votes
0answers
149 views

Comparing the results of one-way-ANOVA and two-way-ANOVA

I don't know how to interpret the results of my one-way-ANOVA and two-way-ANOVA. I have 2 independent variables (s.b.'s trust in the internet="v_563" and internet usage(frequency) = "v_614"). I ...
1
vote
2answers
317 views

Test to determine significance for non normal data with different variance and unequal n?

How can I find out if the differences in length and width of cut marks left in fabric are significantly different between groups (knife types)? Additional Information Groups: ...
3
votes
1answer
338 views

How to interpret relatively good -2LL value & Nagelkerke $R ^2$ without any significant IVs

My model's chi square says my 'full' model isn't significantly better than the null model. But my -2LL is 80 (isn't this pretty low?) and my Nagelkerke $R^2$ is .20. On the other hand, there isn't a ...
2
votes
1answer
98 views

How to determine if a change in F value when introducing a covariate, is significant?

My question may be very basic but I hope that you can help me. I have got two groups (A and B). I am measuring two continuous biological measures (X and Y) which are significantly positively ...
2
votes
4answers
867 views

What's the appropriate spss test?

Context I have 25 men and 25 women as participants, and they did exactly the same thing: Each of them heard an attractive dialogue and they had to choose between a photo of a woman in red and a woman ...
0
votes
2answers
610 views

Should I use repeated measures ANOVA? Or which other SPSS test should I use?

I have already sent a question to this forum about this, but as I changed my experiment a bit and I am still confused, I would be really grateful if you helped me! I conducted an experiment in which ...
3
votes
1answer
3k views

How can we compare multiple proportions from multiple independent populations to evaluate implementation of a treatment?

I want to compare sixteen Case Fatality Rates (deaths per 100 cases) of a particular disease from sixteen different populations across 7 years. Each population received the same treatment but some ...
6
votes
2answers
379 views

Hypothesis testing that one time-series of a measure of entropy doesn't belong to a population

Disclaimer: I'm a software engineer, not a statistician, so please forgive any blunt error :-) I have a set of time-series "curves", each measuring the entropy of a given artifact. Now, I'm standing ...