statisticsfun

It is one of the finest tutorials especially ecstatically. But I would like to see more concepts and less arithmetic. The numbers are nice but the time taken up by by simple arithmetic could be used for explaining the concepts. The disappearing calculations also create a bit of difficulty. Thanks

I'm wondering if I can request some help with a statistical problem. I am trying to calculate probabilities of sampling, but the scenario includes elements of sampling with replacement, and sampling without replacement. Here is the scenario. Imagine a bag that contains 3 balls. A white ball is labeled with the number 10, a red ball is labeled with the number 4, and a blue ball is labeled with the number 4. Select a ball at random from the bag, subtract 1 from the label on the ball and relabel it. If the label is now 0, discard the ball, otherwise place the ball back in the back. Do this 15 times in total. 1) What is the probability that the white "10" ball has been discarded? 2) What is the probability that blue "4" ball has been discarded? 3) What is the probability that the red "4" ball has been discarded? As you can see, the probabilities of selection remain constant (akin to with replacement) only until a ball is discarded, after which the probabilities change (akin to without replacement). I'm not sure how I can model such a sampling method. All of the numbers are arbitrary above and can be replaced with any integer greater than 0.

At 47 I am taking a university degree. I graduated high school in 1986!! So, it's been over 30 years since I did anything beyond calculating a tip or measuring my floor tiles. I attend every class and have gone to the math tutors but couldn't "get" the concepts. David, I want to let you know I discovered your videos today and your playlist on ANOVA has helped me greatly. Final exams are in two weeks and I feel like I found a superior resource to get the marks I need. Miigwech!

I teach statistics and often refer my students to your videos, because they explain things well and are usually relatively short. I would love it if you would do a video on interactions. My students really struggle with understanding interactions, and there are no good videos that I have found to explain this concept. Thanks!

+statisticsfun Do you have a video on lognormal distribution?

Would you mind sharing what software and tools you use for designing your videos? I am a statistical educator and would like to transition all my lectures to a more visually-friendly format. Your videos are among some of the best I have come across in perfectly summarizing dense ideas in a few intuitive slides. Any direction is greatly appreciated.

Hi ... can you please upload fine and course classing technique for categorical variable for logistic regression

Hello, I am so sorry to take your time , but want to know where to place independent variable that is repeated for all observations, that has three levels. I have five observers that ranked their stress level in different conditions (12 conditions) under three different scenarios. 5 observers x 12 positions x 3 scenario this is repeated for all observers (in SPSS) I know that if it was mixed observers I could simply add another column and write the last independent variable. But in my case the scenarios are also same for all observers. Could you please tell me how can I handle this issue? I really do appreciate your help. Best,

You're awesome! I'm a very visual learner (arts background) and math doesn't come easy to me. After each lecture in class I jump on here to reinforce the topics discussed. It really clicks after you draw it out! Thanks

My DOE professor has introduced something called a scaled t-reference distribution for the treatment mean of the experiment. Do you have any tutorials on this topic. Thanks

i find your videos really helpful but i cant comment on my statistical results yet, and really need your help if possible or anyone here,,,, plz contact me on amr_ahs@yahoo.com

First off, thanks so much for your videos and your time and effort for putting up all types of information about SPSS. I do have a question. I am trying to put in the College Student's Stressful Event Checklist into SPSS, but i am slightly confuse on how to do it. An example of the scale is here, https://students.asu.edu/files/StressChecklist.pdf, please help is possbile.

I find your videos very helpful! and the visuals are really cool. May I ask you what software do you use to do the animation? Many thanks!

Thanks a lot for wonderful videos. Please recommend the order in which the videos need to be watched, so that it will easier to understand the concept.

Please I would like to get information about Guttman scale to measure trends and calculate how to build upon the degree of the person scalogram analysis

I think the way you explain the concept...woooo... that is Excellent. Thanks so much for explaining this in a lucid way

Thank u so much

https://www.youtube.com/watch?v=siqx4PbqJ6s                     Do you have a video for two set of numbers? what if ask 95% confidence interval for mean of the change in between two set of number?

appreciate your thought process and making it simple and happy learning’s ..looking forward for other logistic regression topics and advance topics with your way of explanation.....kudos to you  

i have a report to the uni i need to send by monday about ANOVA analysis on a repeated data but i dont know how to interpret,what to do plz?