# significance

1. ### What is the best T test to use for my data?

Hi, I'm trying to work out the correct non parametric T test to use for my data. My data is made of two large groups. Each value in the first group has a corresponding later value e.g. it is showing the chance in frequency from point 1 to point 2 over time, there is many different points for...
2. ### significance of a change / pannel size

Dear everyone, I've seen many posts in this community that seem to answer my questions but I have a tough time figuring out how my situation compares to the one described by the op's and I'm really worried about drawing the wrong parallels... I'm especially ashamed because I studied statistics...
3. ### ANOVA on three columns?

Hi all! I am new to this forum so hopefully this will be a success! I have some data in excel from 3 experiments that are run independent from each other (they do not influence one another). Each experiment has 10 runs each. All the data across the three sets of experiments (i.e. 30 runs) have...
4. ### Chi-square test for multiple rows contingency table

Hi there! New user here, I hope I'm posting in the right section! I was having some issues trying to figure out if/how I can apply a chi-square test to my problem. I know how to deal with and interpret a case where I have only 2 mutually excluding groups, like male/female, and I want to...
5. ### Variable that should appear significant is insignificant

As part of my University research project, I have decided to study the impact of Immigration on house prices but find that the immigration Variable that should be statistically significant according to literature appears to be insignificant. I don't know whether this was down to the method I...
6. ### Hypothesis test for the difference of two means, should I consider annualized or monthly returns?

I have 10 years monthly returns. I calculated annualized return multiplying the mean return over the period for 12. Then I calculated the excess returns as difference between the annualized mean return and the benchmark annualized mean return (no risk correction). Annualized standard deviations...
7. ### Statistical significance of results

Hi, I made an experiment and I want to know if the results are significant or not. But I know nothing about statistics. In that experiment, I show a serie of 70 videos to 12 participants. Each participant should select from a list of seven choices (the same for all the videos) the emotion...
8. ### Proportion Z-score calculator

Hi! I have a sample (of 30) who’s outcome was measured binomially as either YES/NO. The expected population should have entirely NO answers. I therefore want to calculate if there is a significant difference in the proportions between sample of 23/30 (23-YES, 7-NO) and the expected proportion of...
9. ### Constant not sig. in multiple regression - does it matter?

I did a hierarchical multiple linear regression in SPSS with three predictor variables. All the variables have high F-values and are highly significant at each step of the model, but the constant is not significant (0.079) in the last step. Should I disregard all the results just because of...
10. ### What test to report?

Hi everyone, So first let me give some background information on my study. Research question: Are there differences on helpfulness between online vinyl record reviews with the indication of a verified purchase and online vinyl record reviews without this indication? This indication of a...
11. ### Calculating Power

Hi Everyone, I am doing a correlation analysis to see which variables impact the quota achievement of a set of sales reps at my company. I am trying to figure out how significant my results are, but am not sure if I am calculating the statistical power the right way. I'm grouping quota...
12. ### p values, alpha, and errors

I was speaking with a classmate about subject heading for this thread and it made me a bit confused. Here are my thoughts: the way I explain p value: probability of observing effect when, in reality, there is no effect. This translates to probability of data given the null (null=there is no...
13. ### Z test: can I use it in this context ?

Hello all. Nice to meet you. I would like to consult you regarding a problem I'm facing: Imagin you have a dataset containing all of the operating workplaces in a certain city (say, 500 in number). The dataset contains the workplace name, average salary and percentage of workers by race and...
14. ### Checking significance of bias.

In a new design, estimator seems to be biased but efficient than the existing design. Now I want to check whether the bias of the estimator based on new design is significant. The formula of the variance of the estimator based on new design is intractable. How can I check the...
15. ### Reporting Dummy Variables and Determining Significance

Hi all, I was just wondering, how does a person determine the significance of a categorical variable in a hierarchical regression model if one dummy variable is significant and the other is non-significant? So basically, the categorical variable (X) I am examining has three levels, so...
16. ### Question regarding RM ANOVA

Dear readers, I have question about my Repeated measures output. I wanted to check for my hypothesis (whether Dutch, masculinized voices in men were more attractive then foreign, masculinized voices in men for a short-term relationship) a three-way interaction between...
17. ### significance test begin of puberty

Hello, I am running a metaanalysis about the age of girls and boys at the beginning of puberty (Tanner-stages) and it would be great if someone could help me out with two questions about significance tests for mean/median value differences. question 1: In SPSS I have the data of the...
18. ### Event Study: T-Stat for Cumulative Abnormal Returns

I am performing an event study using the market model theory. Rit = αi + βiRmt + εit With Abnormal Returns(AR) ARiτ = Riτ − αi − βiRmτ. So to test the significance of the Cumulative Abnormal Return's(CAR's), one must calculate the variance of the aggregated AR's across firms and then sum...
19. ### Lack of homogeneity of Variance in two-way ANOVA

Hi, I am currently analyzing my data in SPSS. Since I am testing the effect of two independent variables on a dependent one, I was planning on using a two-way independent ANOVA. (I have a between subjects design). IVs: 1. Experimental condition (2 levels) 2. Personality grouping (3...
20. ### Stats Help needed for a project!

Hi Stats Fans, I need your help, as I am stuck with data I collected for a project. I am currently gathering responses about mitigation strategies against fatigue. I am questioning people about what mitigation strategies against fatigue they have experienced as helpful. It is a multiple...