Statistical Tests Cheat Sheet

The methodological choice is the correct choice of statistical test. It does not mean the most intricate tool, but the right tool.

Statistical Tests Cheat Sheet

You have done months of research. Information is concrete, your paper is refined, and you are about to make a submission. Then you receive the review a couple of weeks after. The sentence is not about what you have found; it is about how you have done it. There is one sentence that stands out; it is: Inappropriate statistical analysis.

The above sentence may lead to months of rewriting, a rewrite and submit or even a rejection. Statistical integrity is the basis of credibility in the contemporary publishing world, rather than a mere checkbox, at least in the case of the stringent publishing houses such as Mars Publications. Selecting the wrong test is a wrong practice that is immediately identified by the reviewers.

The great news is: this is not the memorisation of formulas. It involves learning a decision-making model that results in the analysis providing a valid response to the research question. Technical and Scientific Editing Services can be used when you are uncertain that the methodology supports the critical examination.

Why Getting Your Statistics Right Is Non-Negotiable

Consider your statistical test to be the processor of your research paper. Whether the design is as sleek as possible, once you put the wrong fuel in, it won’t start, and nobody will have the confidence to travel in it.

To editors and reviewers, the right statistics are an indication of three things:

  • Credibility: You can trust that your findings are not a mere coincidence.  
  • Reproducibility: The same procedure can be duplicated by another researcher.  
  • Clarity: You have read what is sayable and not by your data.

Your 4 Question Checklist Before Selecting Any Test

Do not go directly to software. First, answer these questions. They are your compass.

What does my research question actually represent?  

  •  Is there a difference between these two groups? You’re comparing.  
  •  “Are these two things related?” You’re correlating.  
  •  “Can I predict Y from X?” You’re modelling.

What type of data do I really have? 

  • Continuous Measurements such as height, temperature or test scores (decimals).  
  • Ordinal-Ranked- data such as survey scales (1=Strongly Disagree to 5=Strongly  Agree).  
  • Categorical/Nominal- Genders, species, yes/no.
  • Also, what is the number of groups or variables that I am working with?  
  • Two groups? Three or more? A single predictor variable or multiple predictors?
  • Am I a good player, by the game of the parameters?  

In t-tests and ANOVA, data are to be distributed approximately normally within the groups and similar in dispersion. Otherwise, find a non-parametric substitute.

The Go-To Tests to Compare Groups (Parametric)

Apply them to continuous data that satisfies parametric conditions.

  • Independent t -test One can compare the means of two different groups.  
  • Paired t-test: Compare two groups of the same size.  
  • One-way ANOVA: Compare means when there are three or more independent groups.  
  • Two-way ANOVA: Tests two variables simultaneously, as well as interaction.

Strong Alternatives to Sticky Data (Non-parametric)

Apply in cases where the data is skewed, ordinal or non-normal.

  • Mann-Whitney U Test: Parametric counterpart of the independent t-test.  
  • Wilcoxon Signed-Rank Test: Non-parametric version of the paired t-test.  
  • Kruskal-Wallis H Test: The analysis is a substitute for one-way ANOVA.  
  • Chi-square test: Applies to categorical data; tests whether the frequency observed is not due to chance.

Uncovering Relationships, Making Predictions, and Testing

Measuring relations and model construction.

  • Pearson Correlation (r): Straight-line correlation between two continuous and normal variables.  
  • Correlation = Correlation (r) Spearman Non-parametric, ordinal data or non-linear monotonic.  
  • Simple Linear Regression: Predict a continuous variable based on one predictor.

The Flow of Your Mental Cheat Sheet

Feeling overwhelmed? Next time you get stuck, use this chain of logic.

  • Comparing two groups? Start with a t‑test. Normal data? Otherwise, use Mann-Whitney or Wilcoxon.  
  • Comparing three or more groups? That’s ANOVA territory. Not normal? Use Kruskal‑Wallis.  
  • Looking for a relationship? That’s correlation. Both continuous and normal? Use Pearson. Otherwise, Spearman.  
  • Need to make a prediction? That’s regression. Predicting a number? Use Linear. Predicting a yes/no outcome? Use Logistic.

The Mars Publications Advantage

Writing with Mars Publications implies that you have to be of high standards in terms of methodology. Rigorously analysed research is rewarded in the process. They will have to qualify this bar by working with Technical and Subject Matter Editing Services. 

These professionals are a pre-submission review board, and they will examine the selection of tests, the testing of assumptions, give meaning to the outputs and shine up your story.

Conclusion

The most fundamental methodological choice is the correct choice of statistical test. It does not mean the most intricate tool, but the right tool. Exactness instils belief, reduces editing, and clears your way to have the greatest impact. Check your options before submitting. To be sure, hire the Technical and Subject Matter Editing Services, since a perfect methodology is your most important strategic asset.

Latest Articles