stats

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    Having a girl the same as AT LEAST one girl? CONFUSION!!

    It’s a combinatorics project for my beginner stats class. I’ve done the project several times and keep getting it wrong. The question reads: “ Is having a girl the same event as having AT LEAST one girl?” AND then it asks me: “Is it possible to calculate these probabilities?” This project is...
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    Stats are more interesting than it used to

    youtube channel In the era of internet stats are more ineresting than ever before. 4 example I found this on Youtube. Merry Christmas :)
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    NLS with real data

    I have data that has length, age and density (counts) and i am trying to model this data to see if density at birth has an influence on length. Since my response variable reaches a plateau i know i will need a non linear model. Can anyone help me with how to go about fitting a non linear model...
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    Statistical tests for SPSS - which is the most appropriate?

    I'm a little confused on what statistical test(s) I should use in SPSS, and hope that someone could enlighten me. Research is looking into the relationship between breed size and how an owner manages certain behavioural problems. A questionnaire has been used to collect behavioural data from...
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    Correlation analysis: spearman or pearson

    Hi, We are conducting research on the relationship between self esteem and aggression. We have aggression scores and self esteem scores and we want to find out if there is a significant difference in the relationship by gender. We have ran a pearson's correlation for the relationship for the...
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    Statistical test for multiple raters

    Hi all, I'm having trouble finding the right statistical test to use to analyze the following situation. I was wondering if anyone has an idea! There are two independent cohorts, 1 and 2, who received different surgical procedure. I want to compare cosmetic outcomes of these cohorts. To do...
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    Item Response Theory (IRT) and Response Time (Millisecond)

    Greetings from Spain, I have a question My doctoral thesis professor and I want to apply IRT to a series of neuropsychological tests (STROOP, Ekman, Discounting Test among others) The bibliography on the subject is almost nonexistent. Can this model be applied for continuous variables? Can ms...
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    Computing relative score for % Values distribution ?

    Hi , I have a survey % values in the following order (in the attachment) with Survey campaign no A1 to A19, and its percentage value i.e (number of surveys successful/total surveys)*!00 , ? Now I have to score the survey campaign such that the min and max values are in the band of 1 to 10 i.e...
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    Best approach of reliability

    Hi If im trying to measure the reliability of my test, which is aimed to measure defense mechanisms. and theres 2 types of defense mechanism, for example avoidance and emotional support, what is the best approach of reliability I should use? is my test considered unidimensional?
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    Logistic Regression: Estimate

    TestTrans YTrans N TotalRRRR055104.7%50.0%131691005.7%31.0%Total3674
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    Which statistical tests to use?

    I am currently looking to carry out some statistical analysis on some research for my dissertation. I am evaluating the impact of a training programme on the number of incidents related to the training subject across several health boards. I have data on the number of training passes for each...
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    Stats Novice: Help finding if 1 value affects another

    Apologies I have learning trouble and stats are a particularly weak point. Im doing research on 10 animals species, and their conservation status at 3 time periods. (1990, 2009, 2017). Statuses range of 7 values, from data deficient, threatened ect. to extinct. Against the number of...
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    Simulating a ranking/draft system in R

    Trying to simulate a draft/ranking system based on prior, already existing individual team rankings in R. Here is the full link to the question: http://stackoverflow.com/questions/42093872/player-ranking-draft-system-simulate-a-draft-overall-ranking-system-based-on-pa
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    Stats Homework Help

    Hey Everyone! :) I am stuck on some stats homework questions! Hoping someone can help me out.. 1. A friend flips a coin 10 times and says that the probability of getting a head is 60% because he got six heads. Is the friend referring to an estimated probability or the​ probability's true​...
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    SOS-Where to begin on this complex data set and what Stat Model to use?

    Hi Everyone, This is my first time EVER posting anything on the web for help, so here it goes. Recently I applied for a job and they sent me over this complex data set as part of the interview process. Of course I failed miserably and tried everything I could with excel. I would like...
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    Statpedia: Looking for feedback & help

    Hello, My team and I recently created an open project for people to create charts in a super easy way. I thought I would share it with this group for suggestions or how people like it. The project is statpedia.com, the new version was just released. We really want to create something...
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    Finding Joint Posterior Density of Poisson and Exp?

    Hi, Some friends and I have been stuck on this bayesian stats question for five days now, please shed some light if you can :wave: We've tried to multiply the the Poisson posterior density and exponential posterior density together to produce a joint density, but we're told it's not correct :/...
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    Intro Stats Problem.

    A student takes a true or false test with 15 questions. He guesses on every question. 1) Find the probability that he gets atleast 1 question right 2) Find the probability he gets 60% or higher. I am stuck. I know it is something with perms and coms. Any help would be great.
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    Monte Carlo Simulation?

    Sorry I want this deleted
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    Help with Biostats Hw question

    The research team has considered your answers to the above. They’ve narrowed their interest to two outcomes (for now): Number of episodes of early rejection symptoms and rejection status. However, they want to know how many subjects they should recruit for each outcome. For simplicity, they...